wantin to fix some hats / miscs for the Female Med [help]

[Ribombri]

i've been using the female medic skin on&off and i've finaly spent a few days watching some tutorials on modeling and editing skins, i havent really fount any videos and how to fix clipping issues for hats / miscs that are already in game on a custom character model. could someone mind helpin me out with how im supposed to go bout this? also forgot her eyes dont work but on the most rarest of occasions so im sure i could figure that out on my own. im quite excited for this lol. i know it might be hell. but im down for the work.