How long can you re-work your Copic coloring?

 

You can go back to your work at any time and blend or change your colored areas. If you don't finish blending something today you can still change it next week, next month or even 3 years from now.

Commonly people leave an image because it is blotchy or uneven. This is usually because it was not evenly colored on the paper surface.  Even this mistake can be fixed no matter how long it's been since they worked on the piece.

Please know the results will vary on glossy papers.