1. I think this looks great and I am on mobile. I couldn’t tell where hairline ends: before looking at the headshot. Skin tone also matches really well.
2. My pet peeve: I flip body source: not headshot.
3. It doesn’t hurt to go back and brush up on the small areas Like smoothing or softening:::::tho I don’t see any of that being needed here. It’s for future reference. And there always seems to be a rush to dish out the next piece:At least for me::: but take your time. May this advice help!
That's a pretty good fake for a 1st timer - Especially the colour matching.
The HS is the correct way round, but the BS isn't. On the 2nd pic below, you can see how her natural neck looks in the HS and where the BS neck is aligned. Flip the body and use liquify to warp and push the BS image around to suit your HS (in this case her neck in the 3rd pic below).
My tip would be to try and not alter the face shape of your HS - you want her to look natural. I always alter the BS face/neck to fit my HS on every single fake I do. If it's too much of a pain to do and looks shit, then the BS and HS probably don't match.