Value portrait of model

I decided to do another black and white/ value portrait study from photo reference, I am not sure who the lady is to give credit to her, I just found the image on google and decided to give it a go, I changed it a little and to be honest my values were quite far off and it didn't look exactly like her. That being said it took me around 3 hours, maybe just over, which for me is super quick. Don't get me wrong it could do with a bit more work but I am still happy with it, especially the hair :)