It's very frustrating when they want me to orgasm and they don't realise for me to do that they have to be
1. My type - ie I find them attractive
2. Extremely patient
3. Able to do what I need to have done to me correctly.
The most awkward situation to date was a client I really did not like - he was kind of agressive (not in an angry way) and really cocky about everything. When he started going down on me he was adamant he'd make me come, so I let him at oral for 15 minutes, his technique in my opinion was terrible and actually really slobbery and offputting, and when I suggested we do something else, after trying to shift to something else for about ten minutes, he declared "You loved that! Why were you holding back? You're weird!"

I do enjoy orgasms with clients I think are lovely and (to my taste) handsome, because they've already got me in the mood.
Tigereyes, I remember the first time I managed an oral orgasm (with a boyfriend a few years ago) and it seriously blew my mind!! So congrats! It kind of opens a door to making them more possible and frequent, I found.