Bigger lips or bigger eyes are considered physical changes, keeping things in general.
There is a valid rule in magic which says 'spiritual stays spiritual, physical stays physical'. Spell casting is in the field of spirituality, which means you can't let them affect you physically.
The conclusion is that physical appearance can't be changed by magic according to the information we get from the basic rule of spell casting and magical working.
You may save money for a surgery which takes care of this issue.