Hi
I think the overall shape is good but could do with a little refining, it looks as though your apex is too far back, but this may just be the quality of the picture, as previously mentioned, close up pics with different angles would give us more to be able to give you better critique.
Your smiles aren't very smiley... and are way too low making the white over balanced.
Other than that, you have made a very good effort, keep it up :hug: