a screenshot for those who still think Photoshop = awesomeness of million layers. I paint on one. The box location is as the name says a help for finding the correct location of the boxes. One plain background-layer and the sketch layer and that's it. It doesn't make the painting any faster. Maybe even more annoying. but I think it looks homogenic afterwards.
And again I realize how different my SyncMaster and the expensive NEC monitor display the colors (btw. the much cheaper SyncMaster is better... so much for a difference of 1000 Euro in price... haha).