Could you please change the background to be a plain white wall? Could you also change my head so it is straight and not tilted? (If the second part makes it look weird then feel free to disregard). I would like to use this photo for an ID with strict requirements. Thank you!
You have to add light and shadows to that neck or it loses all volume and looks really weird, recreating body lines with a pencil requires drawing knowledge and the same as before lights and shadows for volume, really really hard to do realistic even with those..... so the simple and better solution on this cases is just to search for a good match of the neck on internet and blend it..