How to present a seller finance offer to seller? Please advise.

[Hanon Hines]

Hello all- I need your advice. I found this great property and I'd like to pitch the idea to the owner for a Seller Finance situation. He's looking to put the home on the market in March, for a really good price. However, he is motivated to move sooner. He currently has a tenant in the space (which is why he wants to wait). I'd like to present to him an attractive Seller Finance deal, but I don't know where/how to begin. I'm also not able to go the conventional mortgage route so this option might be the best (unless I should be looking into something better?). Any advice would be immensely appreciated!