I think it's really good so far. There's not much for me to critique since nothing major is wrong with it, but which parts do you have left to finish? It might just be the camera glare, but if you want tips, I'd color in RD a little more.
Good job
I think you just need to work on your anatomy. Maybe something like this?
Before I list what I did I'd like to mention that you should most likely place the other two limbs somewhere in sight (even if they're behind the other ones) just so it doesn't look like the pony is two legged. I'd also make the eye smaller.
What I did to the image:
Moved ear higher up on the skull, pointed it
Extended legs
Extended tail
Made rear smaller in contrast
Made chest smaller in contrast
Pushed skull closer to body
I'd recommend looking up pony anatomy charts or using other people's bases to draw over for practice.
Good luck!
I think I stand neutral on them, if not a little below that.
It doesn't necessarily have to do with being annoying. It's more-so that I'm seeing them literally everywhere now for marketing and I could do better without seeing one of them in my face every time I breathe.