How's it goin BP, my name is Sanchez Jones.

I am new to REI although I have read tons of books, articles, watched plenty of video's, & listened to many many podcast. I've made it a priority back in December to step out in the "playing field" & attempt to close my first deal. I've had 3 different deals lined up this month alone but couldn't close on any of them. I have 2 properties to check out on Wednesday of this upcoming week. My question is "How do I get the sellers of these properties to believe in me when it comes to finding buyers & closing these deals with a win-win for all parties involved?"