Ignoring the fact that this is sort of feitishy, I see several problems with this:

The ponies are standing upright. I'm no Equineologist PHD, but I don't think horses can do that. If you want to draw anthro, draw anthro. Otherwise it looks weird. (Side note: why do they have belly buttons?)

Your self insert OC. Jeremy The Unicorn? That's like calling Rainbow Dash Rainbow Dash The Pegasus. Or perhaps on a more controversial note: Lauren Faust The White Female.

Now of course, that proabalby wasn't your intention. But if you're going to outright ignore pony naming conventions, I really am confused about why you named him that. Speaking of, there's two things about him that confuse me. The chest hair and the halo.

Once again, you ignore Equinology. Horses are covered in fur, usually referred to as a "coat." Having chest hair on your OC is like adding a beard to a gorilla. It just feels necessary.

And the halo just confuses me. Now that I'm done de-constructing your OC (At least it's not a red and black Alicorn), I think I need to address something in the bottom right corner:

"Fill them Ponies

full of love <3

I love chubby Ponies"

I'm sorry, but that's creepy. Like, legitimately creepy. You can have your fetishes, but announcing them like that makes you look very silly in some people's eyes. Granted, you should be ignoring those people, as most of them are just complete idiots who have no sense of what common decency is (Since you're new to Reddit, I won't sour your virgin eyes with their names.) but things like this sort of... justify hate towards us.

And with all that, I am done explaining why I objectively and subjectively do not like this picture. Perhaps I was a little harsh to a new user, but I could have been far, far worse.