I've posted this on Pixelation as well since some people seem to only use one or the other and I got excellent critique in both places with my last piece

I'm working on a picture of Sarah Connor as she appears in Terminator 2 but I'm struggling to capture actress Linda Hamilton's likeness.

I'm only worried about the face at the moment because I'll work on the hair and body once I've got a better likeness. I've tried sketching directly from some of the images below and I can get them to look like her, but this three-quarter view is infuriating because her jaw is quite wide, but the front of her face is quite narrow.

If anyone has any comments about the palette then they would also be appreciated because this is my first time coming up with one. Hopefully it's clear what I was going for – a pinkish light behind her and off to the side with a general blue light that's more diffuse and distant on the other side.

I'm not specifically basing it on any one reference but, the longer I've struggled, the more I've leaned on the top left image in this collage of reference images I've put together:

Edited with current version after more critique from Boraka, fskn, and Limes at Pixelation:

I've started on the hair now. The ponytail is blank because I couldn't make it look like hair no matter what I did. I'll keep experimenting but it's difficult to get the right texture.

Edit with an update based on crits from fskn at Pixelation:

The ponytail is really rough and the body hasn't changed. Hopefully the face looks more feminine now.