Single best piece of advice to a rehabber on his first project

[Fred Joaquin]

Hello all! I've been wholesaling for a few months now and may be doing my first fix and flip project off of one of the deals I recently put under contract. It seems like a great opportunity, and I've had some investor education on the fix and flip process, but I know there's a lot more than just education to it. So... I decided to tap into the collective knowledge of the  BP community! I know there's going to be  some hiccups along the way and I'd like to minimize those as much as possible to make this potential project a success. Any suggestions? I realized you don't have much  details on the project so it may be difficult to advise.  I'm just looking for best practices, guidelines, rules of thumb, any general rehabbing wisdom you can share. Thank you!!

[Thomas S.]

On a first flip the costs will exceed estimate by a minimum 25% and the estimated time line will double.