Well, if you want to adapt to digital art, it's just as easy as retracing pictures on the computer that you uploaded via scanner or so ^^
Just use a program like GIMP, which is free ^^
You're very good, though!
I bet you would have problem going over hand-drawn images uploaded to your computer to become a digital and traditional artists^^ You can also sell you digital art for a lot more!
But, it's no choice of mine whether you stay traditional or go digital, too, because it's your art^^