Visualizing how the pitch would look ? Please help :)

Please forgive me for my ignorance here in advance 🙂 🙂 I don’t understand the calculator very well. I am getting my roof re-done. It currently barely has a pitch at all. (It is almost flat) It is the open gable type. Is there any sort of a "visualizing" tool so I may see what a 7, 8, 9, 10 etc. pitch will look like? I want to go steeper for the look but I also know cost goes up quickly too. I don’t want to not go steep enough and not be happy with the look if you know what I mean?

My house is 36’3" from left to right and 40′ from front to back.

Any insight at all would be so gratefully appreciated… you have no idea!! 🙂