looks good... a more 3d style cup would be great...
make the lid look like a take-away lid and in white.. maybe the lip stick on the lid?? or put the lid on the cup with the lipstick on the lid.. the lipstick is a good idea!
This design still focuses on the concept of cup and lipstick, I want to make a lipstick stain on the lid but I'm sorry I have not had the idea while drawing on my sketchbook.
maybe tomorrow there could be a new enlightenment about the idea. Thanks...