It's been awhile since I've painted in large format. I ordered some pretty nifty Sharpie acrylic paint pens with a wide nib from Mister Art. I was pretty dubious. It worked really well on the canvas and the nib and paint held up almost until the end of my line work. It started choking right at the end and I had to go over the last bit twice to get nice coverage. Now that the painting is all drawn, I am working on adding color. The size of the painting is about 4'X4'. (The other photo is the whole painting before the color was added. Taken on my lousy camera phone.) It's pretty cool to see the artwork I've been doing so small (4"X4") translate into large format. It's pretty trippy.