Now P2P site has an evolving "Tutorials" section about Computer Graphics (CG). There I tell how to render nice images or how to get better graphics with Picture to People.
Just taking a look at the tutorials images (without read the text), it's possible realize Picture to People tools are more flexible than you can imagine at first moment. Of course you can already get nice results just with the trivial use, but, with imagination and a good mix of all functionalities, the possibilities are almost endless.
Regarding I intend to improve a lot the number of features of P2P site, maybe someday in future I can even write a book about good practices and what you can make using its tools.