Can you recommend a reliable editing service for a non-native law student working on a final appellate brief for a professional legal writing course?

I am a 2L law student currently juggling a full-time clerkship while trying to finish my final appellate brief. My English isn't perfect and I'm really worried that my grammar and syntax are distracting from my legal arguments. I’ve looked at a few general essay services but I’m scared they won't understand the nuances of Bluebook citations or formal legal tone. Does anyone know of a professional proofreading service that actually has experience with legal documents and won't break my budget?