A while back my daughter and I had some fun playing with medium point Sharpie textas, vivid water based inks that I have had a for a long time, and heavy cartridge card. The cool thing we discovered is that if you draw the Sharpie lines first, the Sharpie ink seems to create a natural barrier for the water based ink when you paint in the squares – like the paper has absorbed the Sharpie ink and can’t absorb the other so you get very nice, crisp lines. Click on the image to make big and you’ll see the sharp lines with just a little bleed of ink. I like the effect.
Nothing Nicer Anywhere 