"Mainly because asking people to follow something like "no overspam" sometimes won't work when you're a regular player."
Well, you could have just donated for admin to be able to stop people from overspamming. You're a good and mature person, but you need to include more detail in your application for me to be certain if you can take on the responsibility of being a moderator.
I've been a bit skeptical of Umbreon at first seeing how he treated certain people. Seeing him now however, it's clear that Umbreon is an individual who learns from his mistakes, and he recognizes when he does something wrong. Not to mention that he has also helped a couple of times in the past by calling me in whenever there's a rulebreaker on the servers.
Just need to beef up your application more and make it more detailed, and you might have a chance. Good luck