I have a problem working with avatar creation. I'm not a creative person so I usually cut and paste..

. So far the Metallica logo i resized, I put 100 pixels on the width and saved it. Doesnt look bad at all.
My real avatar is the serious sam logo in neon....nice huh?
Its resized to 100 by 102 pixels....2 pixels off....allowed?
I cut off the edges carefully the slightest red was the edge....but i hate to take off more.....
Theres one more thing. I asked an artist friend about it and told me in photoshop to choose layers or something. The picture is really a screenshot, but are there still layers? Any ideas?