Check this out! I've created a tool for the Bitshares blockchain that lets you both create and edit NFTs!
It utilizes the updated Bitshares Beet wallet for signing the nft contents and broadcasting to the Bitshares blockchain, avoiding the need to supply this NFT tools your BTS credentials.
Do you want to create NFTs to trade on the Bitshares DEX? It'll soon be very easy to do so once this tool has been released to the public!
At the moment testnet is available to all, however to use this tool on the production Bitshares network your Bitshares account will need an NFTEA NFT in its portfolio.
It will likely be made open source when released so if you're savvy enough you can bypass this requirement if you don't want to support me, lol.