Different people have different tastes, Locke. Don't take it personally. So far, by my count, you've gotten three positive comments and one neutral one. That's a much better record than a lot of other newbies. E.g.: 1 2 3. The fact that angry readers haven't taught you any new swear words yet is, believe it or not, a good sign.
I think both you and your sister have done some good work so far and should stick around. Try entering some Comic Contests. It's a much better way to get started than posting in this forum, anyway.
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The what mentioned above is total fiction. Please don't take it seriously!