Everyone on here has given you great advice. As for me, your profile seems a bit to long and specific. I have a strong feeling that most guys aren't going to take that much time to read the whole profile.

It needs to be shortened and not to specific in order to attract more readers. And the part about having long conversations would probably be a turn off to most guys. Conversations should be short and sweet in the beginning. They're probably talking to other women too, so I doubt to many guys will want to talk to someone who'll expect that much so soon.

Your pics are OK, but your hair style looks a bit dated. I'd try changing it a bit and wear a bit more makeup. Maybe include a full body pic too so guys won't think that you're trying to hide your body. You probably aren't, but some guys might assume you're heavier than you say you are if you don't include a full body pic.

It seems shallow, but guys are visual creatures. I don't think that there's anything wrong about being honest about not wanting kids. You can maybe not put down that you're looking for marriage at the moment, but that might change in the future. Some guys might take that as a sign that you want to get married right away and be put off by it.

It'd probably help to look up articles on how to write an ad for dating sites too? It couldn't hurt.