Investment proposal - presentation

[Account Closed]

Hello! I am new in this field and after doing research I believe I found a potential deal and now I am ready to start doing my presentation for the private lender, which is, in this case, my mother. Although that it is a family member, I should and want to do it as professional as it was for any other lender. What are the most important things I need to include? 

As this is my very first fix and flip project, one of my concerns is realtors, lenders and constructors don't take me seriously because I am new in all this. How was your experience in your first flip? How should I act in front of them?