Karen Diamond shows two different quick and easy ways to remove transparent pixels when creating an element in both PS and PSE. I have always used the magic eraser with mixed results - her methods looks better. This has come into play recently as I am playing with making some elements for the PixelScrapper December Blog Train. Anyone else working on that?
Let me know what you think or if you have a different method for getting sharp crisp elements.
I'm working on that
Really great tip cause i just leave the space otherwise 
Havn't bother to trim it befor 