The imagery this produces is very similar to the one I see when I close my eyes and focus on the initially brown/red patterns that later become complex shapes a

The imagery this produces is very similar to the one I see when I close my eyes and focus on the initially brown/red patterns that later become complex shapes and sometimes creatures. If you don't "see" anything with your eyes closed then this probably won't work for you. Also I should add that what I described above feels distinct from focusing on the inner eye.