Bold Brush Landscape

lopez bold brush
Morning Sun 8x8 plein air oil by Gretchen Lopez
G.Lopez_Red Rock(trimmed)
Chapel Morning by Gretchen Lopez
Gretchen landsccape


Bold Brush Landscape with Gretchen Lopez

January 9, 2025 | Thursday | 10:00 am-4:30 pm 

  • Medium: Traditional Oil, Water-Soluble Oil, Acrylic.
  • Experience: All levels are welcome – prior drawing experience is required.
  • Materials List: Click the tab above for a list of materials students need to bring with them.
  • Location: Sedona Arts Center, Theatre Studio

It’s all about observation, bold shapes and brush strokes! Learn to use shape and texture with the use of one brush!  I will take you step by step to build the landscape and have some wonderful results in your paintings. We’ll start with technique and learn to observe the big shapes. The “Bold Brush” will help you loosen up and gain strength and drama in your paintings!  Photo reference will be provided! Be sure to have a large sash painting brush, about an inch and a half, with an angled edge.  You can find these at the hardware or dollar stores!

Please have drawing materials handy plus a canvas no larger than 12×16!

Questions? Email Gretchen at


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Gretchen Lopez

Gretchen Lopez

Gretchen’s work is inspired, not only by her love of painting, but from her ethnic heritage, teaching and the world around her.  After majoring in advertising and design, she went on to study fashion illustration at the Fashion Institute of Design and Merchandising in Los Angeles, then finished out her studies at The Art Center College of Design in Pasadena, California.  As a tenth generation Native of California, Gretchen is a descendant of the first Spanish settlers and the California Rancheros.  Combined with her native roots, her work is inspired by this rich Ethnic heritage.  Vibrant color and spontaneity, are expressed in the gentle beauty of the Native and Hispanic people she paints.  Combining the traditional with the contemporary, she is able to paint with freedom and passion.  Gretchen lives in Northern Arizona, where she continues to pursue her love of painting and teaching.  She has taught at the Sedona Arts Center for over 18 years, and teaches workshops abroad in Spain and Mexico.  Gretchen was nominated for the Viola Award for Excellence in Art Education, and has won numerous awards in the Sedona Plein Air Festival.  Her works are in private collections both nationally and internationally, as well in exhibits at the Historic Phippen Museum of Western Art.  Gretchen’s work is represented by The Sedona Arts Center Gallery, Adelante Gallery, and The Turquoise Tortoise Rogoway Gallery in Tubac Arizona.

She is also a member of the Impressionist Society of America.

Suggested Materials List

•   2 – 16″ x 20″ Centurion linen panels or stretched
•   2 – 12″ x 16″ Centurion linen panels or stretched
These can be purchased at Jerry’s Artarama here:  oil primed for traditional oil painters and universal primed for use with water mixable oils or acrylics

•   small drawing pad
•   pencils or charcoal
•   kneaded eraser
•   pencil sharpener

•   A good palette, about 12×16 inches.  Masterson palettes are great with a piece of tempered glass for mixing your paints if you work in oils.  If you work in acrylic, the Masterson comes with a sponge, palette paper, and instructions that will keep your paint from drying out.

Rags & Towels
•   rags
•   paper towels
•   a small metal container for your odorless turpentine, or plastic container for water.
•   spray bottle of water (for acrylic painters)

Suggested brands:  Silver Brush Grand Prix from Jerry’s Artarama or The Ivory line from Rosemary and Comapany
For Acrylics: Silver Brush Silverwhite synthetic from Jerry’s Artarama

  • Sizes needed: #2, #8, #10 Flats or Brights

For both Oil or Acrylic: a 1-1/2″ and 2″ paint brush from the hardware store

Be sure to have a large sash painting brush, about an inch and a half, with an angled edge.  You can find these at the hardware or dollar stores!

We will learn to mix color from a limited palette!  Here are the colors you will need in water mixable oils, traditional oils, or acrylic in 37ml tubes:
•   Burnt Umber
•   Burnt Sienna
•   Cadmium Red Light
•   Alizarin Crimson
•   Indian Yellow (for water-mixable oils, available in Duo Aqua from Holbein – Jerry’s Artarama)
•   Cadmium Yellow Light
•   French Ultramarine or Ultramarine Blue
•   Cerulean Blue
•   Titanium White
•   Viridian

Palette Knife
•   palette knife with four to five-inch blade for mixing paint

Cancellation Policy

Registration and Cancellation Policies


  • Each student must enroll individually
  • Classes must be paid in full upon registration
  • Students may register online or by calling the Sedona Arts Center’s Administrative Offices in the Art Barn, toll-free at 888-954-4442 or locally at 928-282-3809
  • Visa, MasterCard, Discover, or American Express are accepted or student may pay with cash or check by registering in person during office hours at the Art Barn

In-Person and Online Classes Cancellation

  • Students must cancel or transfer at least 7 days prior to the first day of class
  • If a student cancels or transfers before the 7-day cut-off, a 15% fee will be applied
  • If a student cancels within 7 days prior to class, there are no refunds
  • If Sedona Arts Center cancels the class for any reason, all payments made will be refunded in full

Important Message

The Sedona Arts Center is not responsible for providing make-up sessions or issuing refunds, credits, or transfers for courses missed as a result of illness, emergencies, or other events beyond our control. There are absolutely no refunds after the cut-off date for any reason, unless the Sedona Arts Center has to cancel the workshop, then all fees paid will be refunded in full.

It's made a world of difference for me. She's an A+ teacher and I've been languishing with no direction in painting, color mixing, brush technique for a long time. Her knowledge, patience, positive teaching style, and painting 'right along side' has been a great experience.

Gretchen has taught me to paint far better than I thought I could! Her patience and expertise are reasons I take her classes on a regular basis.

I love Gretchens' teaching style and her ability to share some of her mastery with her students. I will keep returning to her classes!

Gretchen is a wonderful artist and a wonderful person willing to tirelessly explain techniques and share her knowledge.

Ongoing encouragement. Extremely supportive. I learn something new in every class.