Clashcradyne is not an open-source project - it's my paracosm and it's very important to me! However, I don't mind other people creating their own characters within the setting for fun, or using the setting as inspiration for their own projects.
If you edit my art, make it clear that it's been edited ('cos if your edit's shite, I don't want people thinking I did that).
Some images on this site were made by other artists (as gift art or as commissions I bought). If you want to use these, you must contact the artists to find out their terms for use of their images. Visit the Gallery of Hoorj to find their pages.
Feel free to lift whatever concepts you like from the Clashcradyne setting. (After all, just about everything in it was inspired by other media.) Commercial use is fine too, but if your project is a success, I'd appreciate a tip.
Feel free to make your own character from existing Clashcradyne species. Rarity isn't restricted - if you want to make a character that has only ultra-rare features for its species, go for it.
I'd prefer you didn't, because this is my paracosm and I want to be responsible for populating it. If you find yourself inspired to create a species in the Clashcradyne setting, why not make a spin-off setting? You can copy all the parts you like and throw out the parts you don't.