1. First you need to get him turned on - be more aggressive, grab his stuff, slowly massage his balls through his pants, it's important that you act as seductive as possible - the more you're turned on - the more he'll be turned on. Pull his pants down slowly and act as naughty as possible - this is a great turn on.
2. Grab his hand and lick on his fingers slowly before you give him head - just put his middle finger slowly into your mouth and suck on it, up and down, slide it slowly and moan - you have to moan a lot so he feels like a king.
3. As you're licking one finger, slowly start stroking his shaft (penis) with your other hand, you have to be on your knees and he should be standing, look him in the eyes - this way you can see his reactions. You need to love giving him head if you want him to really enjoy it.