Then I tried covering an entire chalkboard with paper, giving me an image area of about 60x45 inches.
For the school's twice-annual Costume Carnival, I tried using a bunch of acrylic paint pens on individual 25x30 sheets.
The next logical step was full color on a 60x45 canvas, which ended up taking ages - I had to stay a couple hours after class to finish this one up.
So the last couple weeks, I've gone with either smaller canvases or less color.
One way or another, I'm going to try to keep working big. It's challenging, but a lot of fun!