So I'm a regular concentration practitioner. I do vipassana about an hour every day and got curious about fire kasina. I 'get' vipassana but I'm struggling with this. It feels like I'm just trying to force a hallucination. I don't feel any insight from this practice after I finish a session. Can someone tell me where I'm going wrong?

This is what a typical fire kasina sitting for me looks like. (30 mins duration daily)

1. Sit in dark room.
2. Concentrate on flame without blinking or shifting eyes.
3. Close eyes, observe colours and shapes behind eyelids. 
4. When after-images have faded to normal visual static, open eyes and go to step 2. 
5. Do this over and over and over and over. 

Sometimes I see a red dot surrounded by black. It seems very vivid, but it fades away after a few seconds, even if I concentrate on it. That's the only thing I've 'seen' other than afterimages. 

In another thread on this board someone said to 'recreate' what we saw. But I don't understand. What does that mean? How does one do that?

Thank you for your time and guidance. Cheers