Now that you have been doing a lot of FUs, you will definitely want to upgrade and get the stamps made. You can go for the official ones (ask Beh Cia Juan on LINE), or you can go with the budget line which is rubber stamps that you can make with a local/online store. Ask on LINE for the stamp face and create the stamps yourself.
In the video you would learn about the few stamps that you can start with, watch and learn.