The scanners light is a bit bright, plus I don't know how beautiful your hands are. You might try scanning a picture of a person with a skin tone you like and take the colour off that.

As for the number of frames, Myrlyn recons you can over 1,000 and still be okay. I'm currently working on another set of animaions for it, and this time I'll halve the fps. However I've added moreanimations than the last time, so it probably won't be much less.