I can understand your wish to carve the cheeks, and you did a good job!  I agree that your current beard looks nice, and that a Balbo would look good on you, too.  Even though you made the decision to carve your cheeks, you may wish to continue on to 13 weeks with the remainder of your beard before you make a decision on where to go from here.  As for the actual trimming, I have no experience with that; I'll leave that advice to the more advanced bearders.

Beard and Bearder

‘It is not the strength of the body, but the strength of the spirit.’ – J.R.R. Tolkien