Considering revision blepharoplasty - How risky is it to lower a surgically made crease from 6mm to 4.5mm? (photos)

I had incisional upper blepharoplasty about a little over 4 months ago and I unsatisfied with how high the crease is (6mm). Ideally, I would like : 1. my crease to be lowered to 4.5mm. 2. I also would want to tuck in my tarsal platform so my eyelashes could lift and the outer shape of my eyes be in an inverted v-shape. 3. Slight exposure of the tarsal platform I was made aware that crease lowering is really unpredictable, but given my situation, are my goals for revision high risk?