I'm testing out the Posca markers on several different types of papers and/or surfaces. Right now, I'm still most fond of the way the Poscas look and work on the Yupo ink paper. :)
Here's a pic of Grape, from my unfinished/cancelled comic I had been working on (before my mom passed away), "Lemonade". This is Posca markers on painter's canvas--just the cheap, flat [board] stuff you can buy at almost anywhere with crafting supplies. :)