As someone who has cracked nine of your ciphers and partially solved the tenth, let me say this:

Please check that you can actually get the plaintext from the cipher with the keys you used. It looks likes you forgot to apply encryption to some letters in some of the riddles (for example riddle 7).

Additionally, could you please check for spelling errors in your plaintext? They add "false" difficulty to the puzzles.

Thanks!

Penned by my hand on the 24th of Sarapin, in the year 776 AF.