How to mint/create a stamp?

Click on MINT, a window opens

Drop your file (jpg, png, gif, svg) Just fill in quantity then select Lock to lock the supply. It means that you can't add no more supply after having sold quantity you put.

According to fee, Ninjas suggest to let Ninja Optimized fee but you can select lower or higher fee. The transaction's confirmation will depend on the fee on https://mempool.space. The more the fee is higher, the more the transaction will be prioritized.

Click on ESTIMATE to see how much it will cost then click on MINT

Wait till the transaction is confirmed on https://mempool.space, then receive the stamp on your wallet.