Figuring out percentages of contractor/ lender partnership

[William Fisher]

Myself and a friend are looking to get into investing in buying hold single-family homes. She would be putting all the cash down for the property and I'm a contractor and would take care of all of the rehab work along with finding the house, dealing with real estate agent etc. how can we make it so that it would be 50-50 ownership of the property and all future profit?