Have to agree with above posters, it's infuriating that people take away their old art just because they are going to improve on it. Half the fun with drawing is to see the difference between the first wip to the finished product, it gives you motivation too because you can look back at the shitty art you've made in the past and look at your current art and say to yourself that "damn, I've gone from that shit to this, I can definiatly improve even further!".