I'm not that pro but here is my CC
On the portrait,
I dont like it much becouse you can put way more detail on portrait, you can use other colours + more colours i think. + your shade is a bit off,
also you drew the ear from another positon than you did on the head,
The hair is also a bit wierd becouse the hear wich stand up is on the left of his head should be in the midle or the whole (dont know you got this + you can put more detail on the hair)
also HIS right shoulder is a bit to short i think and should be larger his left one is okey
I do like the character its good as far as i can see (ask the beter people for that
btw: dont dubble post? (you triple post and posted one like 11minuts from another one (just edit)?