I don't think there's any rule about how quickly things move in a relationship. They move as fast as the two people in the relationship want them to (and then act on those wants). I agree that asking someone to kiss you seems a little awkward and liked the idea of kissing him on the cheek if the opportunity presents.

I might have a conversation with him to tell him that I'm attracted to him and would like to take the relationship further. If it makes sense in that moment, you could let him know that you are bad at reading body language and picking up on cues.