Avoid hype, it makes me vomit. Avoid cliches like the plague, they're old hat. Avoid putting a numeral at the beginning of a sentence, since it makes the sentence confusing. It smacks of opinion. Anything can be interesting to a nerd.
Academic writing is more formal than the average e-mail message.
This doesn't mean that your writing must be stuffy or boring. Write in a way that seems natural to you, but avoid slang, colloquialisms, or cliches. Not doing so makes you look sloppy. Proofread carefully, to spot missing words, jumbled sentences, or other ill effects of writing with a computer. Scientists often do this, and the ability to collaborate well and work as part of a team is a good skill to have, in science and in other professions.