Mind you, I'm not a pro in the least, but sometimes just a few little things will help tremendously in getting your horse to look just a bit better for the camera.
Because I've got just a few minutes right now, I think I'll do a couple pics/pointers at a time and just add to them as I go.
First off, while I may like this spunky look on Quiet Storm, there are a couple of things that make it difficult to critique. One, the cluttered background. Putting your horse in front of something less distracting would be a simple thing to do. Two, having her set up with all fours on the ground would be nice! As it is, it gives the impression that she's over at the knee.
Another important thing to remember is the angle from which you're taking the shot. In this picture, Quiet Storm looks heavier in the front and has a weak rear end because I'm sitting slightly out to the front of her.
Thirdly, keep in mind the height of your horse. Although to our naked eye a horse may not look small, the camera lens tends to make them shorter. Quiet Storm is just 13 hands, but you'd never know it in these photos because I squat down and aim my lens just behind and a wee bit higher than her elbow. In the photo below, I'm not standing on anything to give me a different view, just standing up as she's trotting towards me. Even a tall horse will look shorter once you're looking through the lens of a camera. Go ahead, try it!
I don't know if any of you have seen that 'fugly' horse blog, but the person who runs it has been lifting photos from the internet and using them to critique and run people down regarding their breeding program. Terribly unethical, if you ask me, to lift other people's photos, but she does. Might as well put your best shots out here instead of giving her the opportunity to blast your baby in front of hundreds of readers
I'll be back later with a few more if y'all are interested!