For the next challenge use the full 640 pixels allowed. Don't make me come over there! Don't make me get up & come over there! But seriuosly folks.... I like the composition, though it's a bit small for me to see much else as per focus etc. The subject is very nice, of course, I love cheetahs. I would prefer a shallower depth of field to blur out the background, but I can't even do that with the camera I have, so don't expect it of anyone, just something else for me to type just in case you have a camera capable of it, and another way for me to complain about my camera.
Since I am lacking in technical skills, I cannot give helpful comments. I am strictly a photo buff who is trying to improve, but as to telling you what is wrong or right, I am in no position to say. I am simply voting based on whether I like the picture or not. Sorry, maybe someday I will be able to give helpful advice