I really think you should do it. You're a great writer and I love Be my Detonator.
I know I haven't posted anything on here, but I have written smut before, and I think one of the more important things is to describe how everything feels. If it just describes what they're doing to each other, it feels like hearing the play by play on a foot ball game. It's also pretty annoying to read. So just make sure to describe how things feel. It makes everything seem more realistic and makes the people having sex seem more connected, if that makes any sense.
Oh, and this is just a personal thing, but a lot of times, people forget to write them taking their clothes off. That's really annoying to me because in one sentence they're kissing and the next paragraph they're fucking, and it's like their clothes just disappeared.
Sorry this is so long. I don't want you to feel like I'm trying to tell you how to write your story or anything. I just thought since you asked for some advice, I'd try to help. Feel free to ignore me. :)