Can someone check this please?

Hi my name is Shannon, and i'm in 8th grade, but very mature for my age and also very smart! I've had an A+ in Language/spelling since I could think so practically since I was a baby! hahaaha! So I was looking at your essay and everything looks great except for Learnt isn't a word, and I couldn't figure out what this word is or is supposed to be Quieten? Lastly, you spelled favorite wrong you said favourite it is actually the way I spelled it when i said you spelled favorite wrong!Other than those little mistakes it looks great to me:) Good Luck:)