It's been my bread and butter lately. I like how unforgiving watercolor is. Since its impossible to erase, you really have to visualize how you want it to look, know how your colors work, and roll with any mistakes you do make.
this is a digitally reproduced poster that was EVERYWHERE around the city of St Louis Park. The color is washed out from the original, which is a bummer, but once I sent it to the other designers working on this, it was out of my hands. The original is ink and watercolor.