Unpopular oppinion: Tifa is perfect how she is. She doesn't need your paintovers or your adjustments.
It's also totally okay if you want her to change, your allowed to be wrong. 
#FINALFANTASYVIIREMAKE #tifalockhartpic.twitter.com/SNoV9Ly9lX
People are gonna like what they like, I suppose. I always tend to view the paintovers or fan art re-imagining in the same vein as "shipping" characters together. It's basically just an unusual form of wish/fantasy fulfillment...albeit in a way that can be kinda snarky at times.