Create a Striking Geometric Canvas Painting: Step-by-Step Guide

What is it about painting that makes me feel a little French—beret and all? I finally finished a large 40 x 30″ canvas we picked up on a steep discount at Michael’s for $23 (50% off plus an extra 25% off). After seeing an inspirational poster design on a blog (thanks to a Pinterest find), I decided to adapt the concept to a wide format and experiment with inexpensive test pots from Lowe’s. I spent about $9 on three small paint samples and mixed them with white craft paint I already had to create a range of tints from just a few base hues.

To begin, I used a yardstick to mark evenly spaced vertical lines across the canvas, drawing them in pencil so everything stayed balanced and proportional.

Pencil guidelines on canvas

Next I used the corner of a small card we’d received in the mail to trace angled peaks, creating faceted, prism-like shapes inspired by the original poster.

Card used as template

Working on shapes

I filled each geometric section with a variety of blues and greens produced from the three Behr testers I used—Tropical Waters, Embellished Blue, and Thermal Spring—lightening many areas with white craft paint to create softer tints. At this stage the composition felt lively and bold.

Initial painted canvas with bold colors

Although I liked the energy, the contrast was stronger than I wanted. One of the best parts of painting is knowing you can always paint over something. I mixed a light green-gray and glazed over the darker green sections to soften the overall effect and achieve a more subtle, tone-on-tone look.

Canvas after glazing for subtler tones

Close-up of brush strokes and muted tones

I love the imperfect lines, visible brushwork, and the subtle variations within a limited palette. The only hitch is the placement: the painting doesn’t quite read well on the bedroom wall, which is a similar soft blue-green. While I hoped the layered tone-on-tone look would blend in nicely, it instead reads a bit monotonous against the wall color. We’re considering hanging the piece in the dining room above a large buffet or console near the front entry, or possibly moving it elsewhere entirely. Essentially, I prefer tone-on-tone art that contrasts with its background rather than matches it exactly.

Finished painting displayed

I anticipated this project would take an evening or two, but it turned into several sessions—probably four or five blocks of about two hours each. It was worth the extra time; I nearly didn’t want to stop. Painting again felt nostalgic, taking me back to high school and art school days. I studied art in college in New York City and earned a BFA in Advertising Design, so making things by hand has always been a part of my life. Using Lowe’s test pots made me smile—back in school I bought more expensive materials when I could, so these budget-friendly supplies felt delightfully low-stakes.

One memory from art school: a drawing professor once nicknamed me “the narrator of life” because I talked through my process—mumbling about dropped charcoal, foreground decisions, or noticing the time as I worked. I was mortified then, but now I find it funny that my career involves sharing and describing my creative life. Maybe one day I’ll track down that professor and tell him where I ended up—though I’ll probably skip mentioning that I used house-paint testers instead of traditional oil paints.