Piecemaker Profiles can be managed at admin/config/media/piecemaker
The profile add/edit form offers a lot of options. Generally speaking the main options that user will tweak have to do with the Width and height (4 different options), color settings, and transitions.
All height and width settings are in pixels.
Color settings are hexadecimal, but require 0x to be appended to the value as opposed to the web based standard of a hash(#). E.g.: (0xFF0000) for Red in Peicemaker and (#FF0000) for Red in most web languages (css, html).
The Transitions are provided in a draggable table to order them in the way you'd like them to appear. For a complete description of the different type please check out the Tweener Documentation.
You can have as many transitions as you want in a profile, but should have at least one.
The best thing to do is to play around with the various settings until you find the right combination you are looking for. You must save the form after adding, deleting, or reordering Transitions