neb,
ok. wasnt sure how much you'd done. looks fine so far. i dont do coloring yet, so you're already ahead of what i can do
as for sharpening, you can try sharpen, sharpen more, or unsharpen mask. all shld be in your menu items somewhere. photoshop prolly has even more ways. are you using photoshop or something else? just be aware that most sharpening will add some noise. so, it's always a compromise, sharpen and get noise, reduce noise with blur, sharpen to get rid of blur and get more noise.....etc, ad infinitum.
the cropping is of course optional. some folks like to leave the whole picture, particularly older pics in the original form. i prefer to 'find the picture', in most cases, so it's just a matter of suiting yourself or a client.
good luck and keep posting
Craig