How well were you able to replicate you custom Hawke in Inquisition?

Not very well at all. My DA2 Hawke had a face tattoo that wasn't available to humans in Inquisition, and the styles are quite different. A perfect replica would have looked cartoonish with the new graphics, even if I tried to update it a bit with new details. Female character faces were much softer and rounder in the last games. I just cut a few corners and got on with it. She's gonna die in a few quests anyway.

Yeah that's one thing they did struggle with I just try to get as close as possible to what my Hawke looks like and use  a few hair mods now and then on them to give them a similar look because you can still use hair mods installed for a human Inquisitor on Hawke as well by just selecting them from the list. I just kind of sell it by saying they just got a haircut or something around the time they leave Kirkwall. Or at least that's how I headcanon it. It works well enough either way.

Well you can chang eyour hair in the Black Emporium just like you can in DAI.

 Inquisition was my first game in the franchise, so when I finally played DA2 I created Hawke with DAI's customization in mind. 

I think I did pretty good
(I used mods for both though)

He never made it through DA2.

It was really difficult for me to replicate my Hawke`s in DAI. My canon Hawke was the only one that wasn`t a complete failure  .