Sorry to submit this lol, but if you aren’t using it already, there’s an app called CamScanner that could really come in hand.

Here’s a link to a post about it that explains it better than I could: http://musical-medic.tumblr.com/post/163777216904/camscanner-a-must-have-for-traditional-artists

Thank you for the tip! I downloaded and tried with my phone but it didn’t work as well as I had hoped for this specific picture, but it seems to work well with a bunch of my other pictures. Thank you!