If you don't know what a B/C is, then these threads will be helpful:
http://www.gaiaonline.com/forum/breedable-changing-pets/a-newbie-s-guide-to-the-bcp-forum/t.54376185/
http://www.gaiaonline.com/forum/breedable-changing-pets/a-complete-n00bs-guide-to-bcp/t.68919606_1/
If you still have questions, then feel free to ask me.
If you're interested, then just post an example of your art here. If you don't have any B/C examples, then you can edit this to look like this, but it's purely optional.
Art examples:
B/C examples:
B/C examples: