Just a small tip: trashing your submissions doesn't really help you improve at all. Like I said in my post on your submission (which you quoted and then trashed before I had the chance to read what you said), I wasn't trying to troll or be an ass. I'm always glad to see someone take an interest in creating skins, but I'm not going to sugar-coat my posts when I review a skin - first skin or not, I will review it and point out every flaw I can find in the skin before providing some useful advice that can actually help people like yourself improve.
However, when you go and trash your skins like that, it's hard to actually come back and look at that advice. If you make a skin that gets a poor rating and ends up being called garbage, don't trash your own submission - use it as a learning experience, so that you may learn what not to do with your skins and attempt to improve upon your own skills. The people here at GameBanana enjoy seeing new skins, so long as they aren't complete overlay jobs that take no effort or skins like yours that only filled in a few spots with a bit of color. Just take your time, and don't release the first batch of skins that you make. For example, I made somewhere around twenty different skins before I felt that I was actually ready to submit something to this site. I honestly thought I wouldn't do very well, but time and effort have proven otherwise for each submission. Just take your time, get in some practice, and then submit a skin when you feel that you are ready. You'll find that people will be more accepting of your skins with the more time and noticeable effort that's put into them. Take note though; simple overlay skins like the one you made, no matter how much time it took YOU in particular to make, will be seen as having noticeably less effort. People such as myself will easily point that out when they see it, and that's something you want to avoid. Just keep on practicing until you know for sure that you are ready to upload more of your own creations.
Since you deleted your skin, here's my advice again:
Hit the tutorials section of the site, and learn what you can for your given field of interest (modeling, compiling, texturing, etc.). You will want to avoid making skins like the one you trashed as much as possible, as most users on this site will respond negatively to them.
Practice what you learn in the tutorials section. As the saying goes, practice makes perfect - you'll find that people will like seeing that you've improved beyond doing simple recolors or color-patch skins.
Use skins that other people have made as a reference for what kind of quality people expect to see in a skin. For example, Internetianer (also known as Inter), DMG, Zira...these are just a few names off the top of my head, but they have created (and some of them still create) high quality submissions. If you use what they've accomplished as a goal of your own to achieve when making skins, you will find that it's a possible outcome by following the previous two things I mentioned before this bit of advice.
Make WiP (Work in Progress) submissions so that others can help you improve your submission, as well as your skills. You'll find that the veterans on this site are more than willing to give you helpful advice - you just need to make sure you listen to that advice and implement it. You can also try directly contacting some of the veteran users on this site for advice. Not all of them will give you a decent response, but most of them will, so long as you aren't doing skins like the one you trashed earlier.
You have potential, dude. You just need to sit down and actually contemplate what you are planning on doing, as well as if you are actually capable of doing something like that. If you find that you aren't able to do something that you are planning, then you follow the advice I've given you and do what you can to improve before asking yourself if you really are ready to give it a shot.