Hiya hun. The line of light is good in some but not on others. Smile is a little wibbly in places, and yes black is really hard to use, talk about throwing yourself in at the deep end!! (its a running joke with my clients that they daren't ask for black l+p or they get rach in a black mood!)
Camera has made the pic a little dark, so it looks a bit fuzzy. Only other thing is the smiles are a bit flat for me, I like em a bit smilier, but thats just my personal preference. You've done a great job, well done, and you have a good eye for design and colour. hth x