I have to say for a first attempt well done you!! I have only recently started doing sculpts myself, but in my opinion, they look okay for a 1st attempt.
In my opinion, you really do have to taper the free edge more when doing someone who has shorter nail beds other wise they will look thick, wide and bulky. As Geeg said, an opaque pink would be better so you can elongate the nail bed then only have a short white free edge.
When you have a long nail bed, even though the white won't be deep they will look more natural this way and not so in your face.
I also wouldn't use glitter along the free edge as this brings your attention to the fact they are wide. ( sorry, i don't mean to sound harsh, just had similar experience with this myself.)
Keep on practising, you will find ways to make them better. Well done you.