Overall these are looking really good! Your head constructions are looking solid. This is a sheet that I made when I first started practicing these that helped me get better at the ellipses and the construction. Yours are good I just thought it may be useful.
Everything is coming along really well and these warped shapes are fantastic! Great contours! I had a really hard time with that assignment did you find any good resources for it?
Really great work Peanut! Keep it up!