Modified Nose and Cheeks

The nose that I originally had was not quite the right shape. I have tried to modify this but I'm still not convinced it looks quite right. the problem I am having is with the nostrils. After moving them around I still appear to get the same shape.

Below I are screenshots of how it had been modified:

I think it is possible that my original topology does not have enough polygons around nose, limiting me with its shape.

My cheek bones are very prominent which they are not in real life. I moved the face out a bit to make it plump.