hello i am new to this site and i looked at your message and wanted to help!!!
my favorite thing about getting oral sex is being teased!!!!!!
what you need to do is to go down there and not do a hole lot of anything SLIGHT kissing and heaving breathing stuff like that for a minute or so then you can start don't do it every time but i bet it will drive her crazy she may even beg you to start.
don't expect too much either i am a women that it is IMPOSSIBLE to get off so just because she don't cum doesn't mean you are doing a bad job.
one more thing if you do it after she cums it is major sensitive so carefully and take it easy but it is GREAT!
good luck and you REALLY need to try the teasing!!!!
