#1 and 2) Thank you so much for your submission:) I like the horses tail and it's abstractness. I would prefer the writing more symmetrical. I like #1 horses stride better because it shows more dynamic movement. I wonder if there is a way to make it even more abstract.
I really like your abstract design with the childs head, the heart, tail and ears!! I am not sure how I would change it, but I feel like maybe it is a bit large and I hate to say busy because I love all of the elements. BUt maybe a little busy.