Kindle Cover With Original Artwork

I just finished making a Kindle eReader Cover and decided to try and incorporate some original artwork as a focus on the front of this project.  I had some canvas fabric that I used to print out the design and then sew it to the cover.  The colors were not as bright as I wished but I do like the overall effect.  

I would like to use more original designs but am not sure how to get this printed out to sew on the front of a project.  Any suggestions?