Hey, some advice....
You need to resize your art into a bite size form, so that when its viewed by somebody full size, it isnt blown up to the size of the moon and all you can see is the corner of the work. I recommend 1000x1000 pixels and below.
Another things to do while you are at that stage is to rotate your image so that it isnt positioned sideways, this is both more professional looking and seems to me like a no brainer if you have any pride at all in your work and how its presented. Its very important. If the problem is not knowing how to do this, simply Open up MS paint on your computer and take some time to learn to command these basic tools to better your art.
One last thing, this is the internet, taking ratings on newgrounds on your art seriously is a poor decision, because the ratings are ultimately arbitrary and focused on the whims of the kiddies browsing this site. I could just as easily 5 rate all your art or 0 rate it all, for no reason. The important thing is that YOU are satisfied with your work.