Hi, if you are talking about customizing canvas size, it is not possible. The reason why this anime/post look smaller than my previous anime is because, I drew this on a different device with a different screen ratio.
Compared to the first upload, the red throw one extra punch. I guess that was the modification you mentioned in the second reupload. For the scrambled frames or glitch, I guess it doesn't affect android users because everything looks like it's in order.