Oh no no don't sell your original!! Sell it as a print this way they can make it any size they want!! I would not sell my original at least!! But if you did then you wouldn't have it to any more. I would keep it/them to see the progress you have accomplished!! Later on when you have moved into a different age, time etc. then when you look at your old picx and stuff, you will remember it and laugh or cry etc. but this is because you will remember why you drew it in the first place!! Then once you see your new improvements you may think wow I did improve and I am different now then I was back then!! That is what I do and I am glad that I did and have!! When at least I am low I sometimes go back and look at what I did draw and remember that!! I AM better then I was be for and it also inspires me for new drawings and to keep moving on and life will be ok!!!! Any ways I didn't mean to write a long comment but hay it might help you or others!! ^^!!