Welcome Johanna
As you already probably know, here is plenty of information and good people to connect with
Try to read as much as possible and try to attend some of the investor meetings
There is a very good one close to you, I believe they meet once a month in the Bethesda Womans Club, plus there are some others in Tyson's Corner and Downtown DC
My advice to be taken seriously as wholesaler is to understand very well the numbers your investor buyer needs, and present only reasonable opportunities, your ARV has to be realistic using real and relevant comps (close in distance, close in time and close in characteristics) and the spread must be enough for him to pay: interest, rehab costs, realtor commissions, etc and still make a decent profit selling quickly. The moment you offer a business with wrong numbers and wrong diagnostic of the property you are loosing a client immediately, remember they had been doing this for long time and if they are new you will contribute for them to get broke and probably that will affect your reputation as wholesaler
I hope you the best
Nereo Mendoza
PD: Please let me know if you come across something in Kensington