The one thing wrong here is that you didn't mis-spell "your". You left out the apostrophe in "whats", but that is forgivable. What we need here is an unforgivable mistake.
There are various ways to mis-spell "your". There are a whole litany of them.
My personal favourite is "yore", but there are other options.
I think mixing "your" and "you're" can look delightfully ignorant if it's done well. I'm not sure it will ever be a match for "then" and "than", but it gets pretty close.
The main thing is that you must remember not to spell "your" correctly ever again. That will immediately disqualify you from the spelling bee.
oh please please don't beat me.......................................