Enhance 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: $10 - $50 USD, Jobs: Academic Writing, Content Writing, Editing, Grant Writing, Proofreading, Proposal Writing, Research Writing, Resumes, Technical Writing, Writing)