What a cute little guy . Instead of drawing him just sitting there you could give him action. he does look cute sitting there but give him live and character jumping, running, ect. Your colour profile picture is good but it would be better to see a front colour picture because your sketches show that his face has cheek hairs but you can hardly see reference of them in the coloured picture. You exclaimed he has a blue jewel but you should have a coloured picture of it. his expressions are great vary flexible depending upon the context of the picture.