A few months ago I did one and I made 5 levels. 2 using very popular liminal space images but were never used. I can do one a few days or maybe even one a day. You can see what I did last time: Level 350, Level 368, Level 380, The Agglutinate Matrix, Level 108.
(Edit: also Level 205 but I forgot to add it)
First level: Level 72
Second level: Level 55