I hate to say this, but if you need plans to frame, sheath, side, and shingle a 10'x10' shed, on an existing pad you probably shouldn't be building one (unless this is for permit purposes
).
None-the-less, here's something that looks pretty decent. Dimensions are a little shy but you could easily adapt them to your requirements:
http://www.wolmanizedwood.com/shed.gif
-bear