That's good he's still eating from your hand. You are pairing yourself with food and in time you (and your hand) will become a valuable reinforcer.
I am imagining that you are expecting him to get up on the hand that holds the seed? That will work to a certain extent. What would happen if you tried holding one hand over the top of the other (palms upwards) with the seed in the top hand? Get him used to eating like this for a while. Then very gradually whilst he's eating move the top hand towards your wrist so he has to start reaching for it. Keep the movement very small then end it there. Next time start again from the beginning and see if you can get him to reach a little further.... until over as many sessions as it takes, he begins to put a toe on the lower hand, then a foot, then two feet. Keep the sessions very short and always end on a successful step. If he fails any step then go back to the last successful one and go even slower. You could even try this just before giving him his breakfast to make the seed more desirable... you are not depriving him of food, he's getting exactly the same but is working for some of it.
When teaching a new behaviour it's important that the behaviour is reinforced
every time.
Have you tried hanging some millet spray up in his cage? My mother's budgie now loves it after I got him some. Took a little while for him to try it. The more reinforcers you can collect the better. If Bailey got to like millet, for example, then you could offer it only for training sessions. Because it is not available all the time, like perhaps the seed is, it becomes more valuable and therefore he would be more inclined to work for it.
I don't know what the winking game is in observable behaviour, but if he does this often, then notice what is reinforcing it.
Could it be some kind of interaction with you? If an animal can hear, see, smell you, you are affecting it's behaviour ie. training it with every interaction.