I’m sorry to say, but this entries size dimensions are too small. Are you able to increase the output size of the drawing and re-uplaod?
These rules have changed a bit from previous years, so please be sure to read through them thoroughly.
Images of a pony sitting or standing on all fours should be a minimum of 800px in height, head-to-hoof. 1200px is preferred. Images of ponies standing on their hind legs or in an unusual pose should be proportional.