Do you ever go back and delete older stories you've written and self published through either Smashwords or Amazon? I've grown a lot with my writing over the years and wonder if agents consider things like this. Would it be better to approach an agent with a "clean slate" or a catalog of stories that have shown your progression over the years? I've noticed, and been told, I've grown a lot with my description and characters, both of which weren't as strong when I first entered into self publishing.
Should I dive back into older stories and rework them using what I know now? What's your opinion/experience on the matter?