I've spent a lot of time yapping about format in query letters.
But not alot.
Truthfully, bad form won't kill you. It raises the bar to be sure, but it won't kill your query.
What will kill your query is bad writing. One of the most reliable indicators of bad writing is an inconspicuous little phrase:
My novel is approximately 75,074 words in length.
I'll give you a second to think why that generates the fastest no since "fiction novel."
Well, more like "got them?"
1. approximately 75,074. How much more precise can you get? 3/4 of a word? This is a sign you're not actually thinking about what you're writing. That is a BAD sign
2. words in length. What else would it be? Words in depth? Words in height? This is a sign you're over writing. Things like "she picked up the banana with her hands" Well, yea, what ELSE would she use?
Ok, if you're Tawna Fenske yes your feet, but generally people are picking things up with their hands. It's like saying she breathed with her lungs. In other words: d'uh.
Reexamine your query for this kind of over-writing. If I see it in a query, I know I'll see it in the novel. If I know I'll see it in the novel, I know I"m saying "no thanks."