character study - nick from heartstopper

this is a study of Nick from the heartstopper show, i do enjoy doing more realistic studies but i do find it quite difficult trying to get the shading right. i didn't have a specific method of getting this piece completed but i added the picture in the background as a guide to know what goes where as the beginning drawing wasnt entirely looking right. i had tried not using the reference picture too much for drawing this peice.