1. Stop using two spaces after a period
Farhad Manjoo explains in this article why using two spaces is a crime.
Someone else explains in this article that goes into some seriously extreme detail about spacing, why Farhad Manjoo is a hoofed mammal of the horse family with a braying call help me write my essay.
2. Stop using “your” when you mean “you’re” and vice versa
4. Stop confusing “loose” and “lose”
5. You have permission to stop using the words “veritable cornucopia”