Model Portrait with retouch

The 3/4 shot seems a little soft, any idea why? My wider shots tend to end up that way as well

Good use of colour, background, jewellery and her shirt all harmonic and the highlights in her hair matching her skin colour, from the gold reflector providing the fill light, pretty well executed too. Good general photogrpahic technique, lighting, exposure and white balance etc.

Is there anything I would change? Not too much really, perhaps if this is a pro shoot then the nail varnish and lipstick should be colours that work better, together and with the other colours, and there seems to be some chipping of the nail varnish. The facial expresion could be more warm or happy, as per the holiday vide. And the hand looks a bit as if someone just snatched her cell phone away. These are small points though if this is not a professional assignment or library shoot.

The images are not particularly clean, meaning they seem to suffer from JPG artifacts or some other degredaton. Of course, I don't know your workflow. But shooting RAW is always better than shooting JPGs. Copying and then recopying JPGs will lead to increasing loss of quality as will saving as smaller JPGs, all obvious stuff that could have casued the grungy image quality and lack of clean sharp definition. I don't know why the 3/4 shot is much worse in this regard than the head shot unless they have been processed differently.