You need to have a process on how you will start and start by creating a database of potential clients
Report Hassan's answer
The urge to setup as a BD Consultant means you must have helped a few ventures with advises (whether paying or non paying clients). That forms your portfolio. Cut yourself a niche in terms of a market sector or a business demography that you want to specialize on and generate enough leads on that coordinate. Finally think visibility, Online presence and also referrals. Bottom line, embrace organic growth.
Report Morris's answer
Hi Bill. You should start developing a business plan. Here you have an example: https://www.bplans.com/business-consulting-business-plan/ . Good luck.