Alright, it looks like everything has been mainly covered by Gario, Rozovian, and SlyGen so I'm going to keep this brief. I don't mean to be harsh here, but these are pretty much just rips of the original MIDI and those won't ever get past the OCR judges. So, I know you tagged every one of your mixes with Mod Review, but every one of the mixes has a pretty similar set of problems with it that would prevent them from passing.
MIDI rip is a big no-no. You can use the MIDI for reference of course, but you need to change up the instrumentation, arrangement, and structure more than you already have.
The production is iffy. Some of your samples work better than others but the way they're mixed together is still relatively amateurish.
The song length is a problem - generally, only mixes that are 2 minutes or longer have a chance at getting accepted.
Your repetitive use of loops is also cause for concern.
These critiques apply to all your mixes really, so if you want to get posted to OCR, you're going to need to improve in all these areas. What you're doing is fine if you're just making music for fun, but know that you're going to keep getting the same critiques if you don't take all the above areas into consideration.