I finally bought the full version of ArtRage and I had some fun with it this weekend!
The layers feature is great and I used it heavily on the gum chewer painting below. I am just concerned I will get too reliant on layers that and be unable to do without them when I try "real" painting. (My intent is to do some "real" world painting in addition to ArtRage after practicing for a while.)
If anyone has any suggestions or advice on any of these pics, please feel free to post it!
I have not used tracing images here. For that matter I have not tried the built-in reference image thing yet either.