I'll draft this as a mid-market proposal (3-5 pages). First, a few quick questions to make it specific: 1) Company name and decision-maker role, 2) The exact problem driving this — what triggered them to go looking now? 3) What does success look like for them at the end of 3 months? Once you confirm, I'll write the full proposal opening with their situation, then approach in 3 phases, deliverables, $25K investment with milestone payments, timeline, why-us section, and a clear next-step CTA.