The key to a winning job proposal is to tailor your approach, highlight your skills, and understand client needs. Read on to learn more.Here is the EXACT structure that I use for all of my proposals. I've honed this after submitting hundreds and hundreds of losers and a dozens of winners. Here's an Upwork proposal sample and proven fundamental rules to write Upwork proposals. Here's the structure I'll follow in each job. In this video we're covering everything you need to know about upwork proposals and how to write cover letters that win high-paying jobs. Let's discuss what are proposals on Upwork, how to write Upwork proposal, and what mistakes you should avoid below. What is an Upwork Proposal? An Upwork offer allows you to submit your application to convince clients that you are the perfect candidate for the position.