Answer:
ur thinking of YOU. I KNOW IM SMART
I've always been told check for <em>spelling errors </em>first, which technically you are beginning the process of proofreading.
Next, I've been told to look for usage errors, which means, did you use the word in the correct context.
Then I believe you look for grammar mistakes, which includes subject verb agreements, fragments, punctuation, and can include style of the paper, which I believe looks at the sentence variety.
Hopefully this helped and good luck.
irony or inference.........