HOW CAN I DESIGN A VERY GOOD FURRY????
Practice human anatomy until you're good at it. You can't draw good wolfass before you can draw good ass. If you want to get into profitable fetish art, place extra emphasis on practicing feet and fat distributions.
Once you're done with that, practice drawing the heads, paws, and dicks of wolves, foxes, dogs, and cats (feet should stay human-like for aforementioned reasons). A weird thing about furries is that they don't really have animal-like eyes either, so basically just stick big human/anime eyes in their sockets instead.
If you want to tap into an even more potentially profitable market, you can start drawing dragons, although they're more complex than mammals due to having wings/scales/not being real, and "people" with dragonsonas are infinitely more autistic than the average furry. The same goes for Star Fox characters and Pokémon: it's really a question of how much sanity are you willing to lose for money.
HOW CAN I TAKE FURRY PORNO COMMISSIONS???
Post your art on DeviantArt, e621, /trash/, FA, and Twitter. Look at furry artists that are around your skill level, see what their prices are, and undercut them by a dollar. Make a picture detailing your commission prices, set that as your pinned tweet, watch the dosh roll in.
