I would like some help deciding price range and also picking out a few things to improve in my art. Please keep your critiques polite and helpful or I will ignore them.

I will post examples shortly.

The main thing I see that you need to work on are: grounding, add grass around the hooves, make it look like the is sand on the hooves and things like that. You also need shadows. You don't have any shadows and that is a very important thing. The hair and markings are pretty nice, just need practice. I'm not good at pricing so I won't tell you any cuz it would probably be wrong.

I think you could charge 5-10k

Yea I agree, your lighting and manes and tails could also use some work. Looks really smudged overall and the horses dont have any details, the legs on the last example are just blocks of grey.

That is some older art. I was just about to post some new stuff. But I agree with you and Cat's Eye

Here's some newer art. Pricing and Critique?