I have written some "explicit" stories among friends in the past. But enough about that, I believe the easiest way to convince someone about my writing skills is to simply demonstrate.
As Kira's fingertips smoothly made contact with Rachel's vulva, she could feel Rachel breathe into her ear. The warm air from her mouth seemed to caress inside her ears, a place where no man could ever touch before. The sheer thrill sent shivers down her spine and caused her to shiver with delight.
Seeing her chance, Rachel crept downwards, still making eye contact, still grinning. Soon, she was licking Kira's nipples, first slowly, very slowly, then she began flicking the nipple with her tongue, still with that boyish grin on her face. Kira couldn't hold it any longer. She grabbed Rachel by her face, pulled her closer, and began to embrace. Rachel's lips tasted like blood red cherries, just picked from the trees, and Kira's lips tasted like peaches, juicy, plump, and ready to go.
If you like what you just read, I've got a bunch more in my head. I am most comfortable with boy-on-girl (no, not in a pedo kinda way), but I also do girl-on-girl, and occasional man-on-man when asked. But please don't ask me to do man-on-man, since I'm not really good at those.