Nice work, there are some anatomy and colouring issues though. You should use a reference for the horse body, his muscles look off. The left arm looks too thin compared to the hand.
You should avoid using grey or black for the shading. Cold colours or dark warm ones are better. the horse tail needs some refinement.
Some work on the background would be great
+7

Thanks diane for checking my work out, its my first submission here and im kinda excited to here what people think. I couldnt agree with you more about the horse body..i had no internet back then when I drew this and it was really hard trying to get reference of a horse. thanks for the tips about the coloring also!

i like it, nice work!
i think the tail need more detail, i agree Diane

her head looks great
i like it

i agree "the beautiful avatar" ...Diane, too.

nice work!

Some anatomy problems aside it is a nice picture.

The girls body looks better than the horse- but I still like it

nice work! I like the concept of a girl centaur and the modern touch on her looks great! keep it up!