Try this: take in your one hand the camera and in another something to attract the attention of your kitty. Than, first focus on his cute head and then attract him with a toy, feather, ... When he looks up you take the picture.
It's better if you can have someone else to attract your kitty while you can hold your camera with two hands!
And by the way, you have to take at least 20-30 pictures (a mini photoshoot ). Then you select the good ones.
In this shot my Sirius was just watching the birds outside. So he was focused on that while I had the chance to take his picture.