Polish PhD Application Motivation Letter

I am looking for a professional academic writer or editor to review, refine, and optimize my Motivation Letter (motivationsbrev) for a PhD application. The draft is already written in English, and I need an expert to elevate it to a competitive, professional level... (Budget: $30 - $70 USD, Jobs: Academic Writing, Article Rewriting, Content Writing, Copy Editing, Copywriting, Editing, Grant Writing, Proofreading, Research Writing, Technical Writing)