Charcoal & Pencil Horse Portraits -advice and constructive criticism welcome-

Hey guys, I haven't been around for a while. I've recently started sketching again, and want to share some of my latest works(from oldest to newest- some are almost a year old for comparison).
Also, if anyone would be willing to share portrait-style photos of their horses with me, I'd love to have some new inspiration for sketches, but please, don't flood the page with images.











(I know the proportions are off on this last one, but I absolutely love the expression in the eye)

Thanks for looking!

Love the skeleton one!

You've definitely improved especialy at muzzles. Over the time line you can see some major improvement overall. One thing I would suggest is taking a page in a sketch book, and doing one thing over, and over. Draw an eye 30 times on one page, or a speed sketch of a horses head/hoof 5 times on one page. Doing sketches repeatedly like that can help you drill yourself on proportions or shapes. Another thing I would suggest is flipping your art upside down while you're working on it. You'd be surprised at what kind of flaws you'd find when you turn your work another direction.

Other than those you're getting visibly better with each work, and I don't see any help in pointing out proportion issues when it's clear you're already working on them.

Thank you! It was a one of a kind sketch, not sure I'll venture to do something like that again, but it was fun!

Thank you! I agree, I have improved there quite a bit, hopefully I can improve more with other parts of the horse in time.
I will definitely try the speed sketches. I do about half of most sketches upside down, as it is already, I have issues doing certain line strokes directly onto the page right side up, I'll try reversing that more.