I think that's a no go on photoshop and it would be a lot easier to just install easy debian were you get gimp. It works just fine and have alot of the same features as photoshop
Ansel-A is still under development and the last time i checked it out, it couldn't save the changes yet, but that could have changed now.
Theres allso a guy called fieldofcows that are developing a cam app and editing app. They are called 'classic cam' and 'classic print'.
Just do some searching on this site and you shall find