For Photoshop:
Open Photoshop. Double-click on the .abr file to install your brushes. This will automatically add these brushes to your preset menu.
For Paint.net:
You need CustomBrushMini Plugin: here
For GIMP:
Enjoy!
Custom Content used:
- Skin: https://www.thesimsresource.com/downloads/details/category/sims4-skintones/title/female-skin-14–overlay/id/1406391/
- Nose: https://katverse.com/2019/01/12/nose-mask-01/
- Hair: https://www.thesimsresource.com/downloads/details/category/sims4-hair-hairstyles-female/title/leahlillith-regina-hair/id/1436094/
- Eyebrows: https://simpliciaty.blogspot.com/2017/05/halcyon-feral-eyebrows.html
- Eyes: https://www.thesimsresource.com/downloads/details/category/sims4-makeup-female-costumemakeup/title/frs-eyes-n23/id/1429805/
- Lipstick: http://alainalina.blogspot.com/2018/01/lola-lipstick.html
- Dress: https://gorillax3.tumblr.com/post/182316537849/crimping-off-shoulder-dress-full-body-new-mesh