yeah the blending solvent for the clear is the key. I like RM's HR50. Has worked the best for me. There are alot of tricks and tips to blending clear. Kind of hard to explain over the internet though.

as far as blending the color....that is pretty easy. shouldn't have a problem with that.

I would just say avoid the hard lines of taping it off small. I would tape it out bigger and clean really well the blend areas this way it all just melts in to the existing clear.

Hope that helps.

Josh