To turn an image into a line drawing using Procreate, follow the steps given below:
- Import the image in Procreate
- Click on the Action Button, choose Image and then select Insert Photo
- Choose Layers and then select Duplicate
- Tap on Adjustment, select HSB (Hue, Saturation, Brightness) and then choose Desaturated
- Go to Layers and then make a duplicate copy of step 3’s layer
- Finally, Tap on Adjustment > Curves > Invert.