Not really my style. I don't like the computer aids apart from colouriseation and hue parts really. I'd mostly say I draw out what parts I want to edit to a seperate window before it goes in to the finial thing. Is a long and laborious task but I like that. And I am improving with that way of doing mine. As well as making things from complete scratch. Helps me with my digital colouring skill with my Manga work too, and finding other colours that I want to keep. A PNG File of just colours with effect results of settings and the actuall colour so i don't need to run around for the actual colour.