The bottom right triforce piece isn't the same size as the other two, some things are lined up with each other, mainly the red bird part of the shield. Also, your colors could use working on, and remember : You don't have to outline everything.
i made this a few days ago in photoshophttp://img.photobucket.com/albums/v191/legofreak1988/photoshop/mastershield.jpg'tis fun