This brush imitates a dip pen with your well known ink. I edited it to a fully functional Procreate brush. This brush is pressure sensitive and draws you a realistic pen look. With the download you get a .zip folder. In this folder there is the brush and a short installation guide. Have fun. Attention: The brush is only for the procreate app on an iPadPro

https://creativemarket.com/fabian.fischer/1195801-Dip-Pen-for-Procreate-App