Writing contract to put house under contract

[Emerson Harbert]

so I live in the Houston area in Texas. It's been awhile since I was able to find a deal I can afford. I just signed papers on foreclosure flip on Saturday, an hr after I signed one of my other deals came through. I'm trying to do both. I'm will probably get second house under contract, but I want to make sure I can reassign to someone else if I can't do both. I had someone tell me to use trec pg 1-4. I'm not sure how to do this fully...  any help or insight?