Hi, KesonaFyren
Gimp has official tutorials:
https://www.gimp.org/tutorials/Custom_Brushes/
-----------------------------
If you want to use color, please use Grayscale Mode and Transparent Layer.
Colors menu: Color to Alpha, Remove the white background.
Obviously, the background of the image you use is not transparent.
P.S.
(Using transparent background can avoid many problems. I only use transparent background to make it.)
(After saving with transparent background, GIMP will be automatically converted to white background. Just found out )
Gimp has official tutorials:
https://www.gimp.org/tutorials/Custom_Brushes/
-----------------------------
If you want to use color, please use Grayscale Mode and Transparent Layer.
P.S.
(Using transparent background can avoid many problems. I only use transparent background to make it.)
(After saving with transparent background, GIMP will be automatically converted to white background. Just found out )