maaan.. im in the same state as you and i cant get further.
i think that the only point is just relaz and w8 after you feel the vibrations for at least 10 minutes.
i see the flashing lights in the corner of my eyes too
aand.. i found a really good way to get the vibrations just dildo-like. all you have to doo is get fully relaxed and w8 for about 20minutes after getting relaxed.. then, when you should see random pics etc. with your eyes closed, just imaginise, that you are at a very high bridge (for excample) or a hugh building.. and then just jump from it! weeelll.. i had the emotions, like i would really falling, i felt adrenaline in my stomach and the general - SUPER VIBRATIONS!
and one thing more.. i guess we need to try open our astral eyes... just look into the darkness (real eyes closed) and try to see where you're looking at.
i think it just requires some time, both for trying every day and just we need to w8 while trying