I shouldn't be giving you advise considering I write crap lemons, but i can give you advise as a non-virgin and I also have my trusty male freind, david, to give you the male perspective.
With the first few lemons i wrote, they felt empty. There was seriously something missing, but i posted them enyway because i worked too hard to not put it on. But, in faces, my attitude changed. I stopped focusing more on the sexy side of it and the fantasy sid, and more on what the characters feel. I thought, I have done this before, and i thought about it and put exactly what i felt into words. it's all very well saying the functions of sex, but it's another thing getting the reader to relate to hoe you describe it. If what they read doesn't match what they feel wheh they do it, the story loses its appeal. The idea is to generate the same feeling. To do that, you have to know exactly what it is. Think about it and keep playing it over and over in your head, preferably in a quiet room so you can focus more.
If you want to make it graphic you dont have to use terms such as 'dick' and stuff. If you use them exessively, the scene looses the mood. There's nothing worse than getting tingly and then you see a word and think 'well that's a spoiler'. Another hint, make it last. Some people make the actual joining and motion last one short [paragraph. It needs to be longer. Relate the time periods in the story to those in real life. Another hint, do not go off topic. Describe feelings but not too much or the reader wont know where the scene began or ended.
That is the advise of a female.
David says.......
"it's ok to do the touchy feely thing but dont do it too much, coz the people reading arent all gonna be girls. There needs to be an element of erotica in it. But, as bet said, there needs to be an element of truth to it. a guys not gonna get thrills (im sorry but he actually said that^_^;;) by reading a story. He needs to revive and relive the experience in his mind. Thinking baout it is what does him (OMG i am so sorry

) the favour. For a guy, it is 90% the case that he wants to get himself done even if the girl doesn't. It's just the way it is. so you may want to tone down the 'i'll wait for you' scenario. It usually the case that they make up for it later. Or they just give the girl an intense amount of foreplay before hand so she comes at roughly the same time anyway."
I just wanna add that there are quite a few cases where they are too stupid enought to remeber to do that *glares at ex boyfreind JASON!!!!!!!!!* :evil:
anyways, that my advise.
if you haven done it yourself, try to get the experienc some other way. david, ever the pervert, recomends some real erotica.....*rolls eyes*