Thanks for the input. The only reason I was wondering about vector format is to work with and position lines and mask outlines. The actual artwork in RGB would remain unchanged. I'm having a tough time getting an accurate outline of, say, a wing and just do do the outline, vector allows me to push nodes around and get everything just right. I haven't found a way to adjust a line in RGB...I have to start over. Could just be my own ignorance since I'm in VERY new territory. Give me another decade, folks, and I'll be a force to be reckoned with! :-)