Post Processing (The Gimp): How to remove Dust/Unwanted Dots with Clone Tool?
Before:-
After:-
1. Download The Gimp
2. Open the Image in The Gimp.
3. At the Toolbox, Click on the Clone Tool.
4. Ctrl+Click near the Dust to set a new clone source.
5. Click+Hold on the Dust to paint and remove it.
6. Done.
Before:-

After:-

1. Download The Gimp
2. Open the Image in The Gimp.
3. At the Toolbox, Click on the Clone Tool.

4. Ctrl+Click near the Dust to set a new clone source.

5. Click+Hold on the Dust to paint and remove it.

6. Done.