It's an interesting fantasy to paint such a fat ass green! Ladies with such an ass are especially good in the crawl position, a boner is assured. Except you have to have a decent length tool. If you don't have one, I recommend laying the lady on her back and fucking her with your hands on her thighs pressed up against her belly. Otherwise you can't get the dick in deep.
Oral caresses always make sex more sensual. Many people are scared of them or perhaps consider them something shameful. But you should look at the girl and realize that another way to give her sensual pleasure has not yet been invented. Of course, it's up to everyone. But I made a choice for me. And the cheerful smile of my partner tells me that I was not wrong in my choice of caresses.