I couldn't agree more, photoshopping your tattoo photos is cheating IMO, I have MD's "get digital" and learned quite a bit from it but most adjustments I make Are made to images before I even make a line drawing.
in his video he edits out paper towel remnants and I don't see a problem with that but personally I don't even bother with that if someone asks I just tell the the truth, it's specks of the paper towels I use.
My after photos always suck anyhow, I just use my iPhone or iPad and always have glare from the shop lighting.