Some advice needed on seller financing

[Shawn S.]

So I have 2 properties that I am interested in. The owner has them free and clear. Since I don't currently have enough for a 2nd properties down payment I asked the sellers agent about owner financing. I was told to feel free to write a proposal and they'd get it to the owner to see what he thinks. Can I get some ideas on what this should look like? Or perhaps some sample owner financing offers? One property is about 40k and the other is listed at 58k.