Little bit smaller icons
I measured your icons size and noticed its little bit larger than the average size used out there across different applications. Can you make it little bit smaller. Not sure how many pixels smaller it should be. Maybe 4 or 5 pixels.
For example, if you click on the ipod touch Settings you'll see the icons for Wi-Fi, General, Music, Video and so forth. Most applications use that size. Can you use that size as well. It looks much better in that size.
I’ll look into the size of the icons.