If you want effective protection, you need to apply to the state for relevant registration.

I think what you draw should belong to copyright.

If others print casually, print with your permission and give you some money. If someone else prints your drawings and sells them for profit, they should give you some profits.

All the above are based on the premise that relevant intellectual property rights have been registered.

If you are not registered, you can sue those who use your pattern and ask them to stop the infringement, but in this case, it is more troublesome for you to prove that the pattern is made by you.

I suggest that if your design is really NB, very popular and has broad market prospects, you'd better apply for copyright.