So last night I was extremely tired and fell right to sleep. I woke up at about 4:30 to take a pee, and then got back into bed and started relaxing, focusing on my fan for a little bit. I then put my hand under my pillow and starting using the FILD for about 2 minutes. Relaxing my eyes was no problem and finally I stopped and plugged my nose and tried to breathe. I couldn't So I tried again and put my mind to it but still nothing.

Now my question is how can I specifically focus on my fingers' motion. I remember seeing something about it somewhere but I forgot. Could someone enlighten me?
Thanks.