I had painted these trees using a variety of media and thought they turned out in a nice way.  I was disappointed when I smudged paint and ink on the page, so thought it would be a good time to try the process of cleaning the image using Photoshop.It is not perfect by any means, but I got rid of the smudges.  I worked on the shadows, but it got tedious, and I stopped.  But none the less, I learned a lot in the process.