For those interested in my Beach Ball entry, I made a layer-by-layer animation
This is not really a tutorial as the layers are not in the order in which they were created. All stripes are made from smart objects free-transformed to fit, with gradient overlays and bevel/emboss effects. The shadows were mostly eyeballed. And, of course, I used a reference
to build the whole thing
Reduced PSD here
made in CS4 Extended, I'm not sure if the smart object transformations will read correctly in older versions.