Draw on Epaper


So i got the 1.54 inch Epaper from Wavebench, and wanted to be able to put a drawing on it, i've done something on paint, now i used image2lcd to get the array, but now i don't know where to put it in the demo code of the epaper. I also have a 2.13 inch hat b one if that makes it easier.

Demo code: https://www.waveshare.com/wiki/File:1.54inch_e-Paper_Module_code.7z

Thank you,