There's room to grow into formatting and layout but it's clear that you've been playing and/or reading the material of this great big hobby of ours. Please keep writing! This is the kind of completeness that turns out great modules. I hope you got to playtest this because it's pretty cool!
Just the way you described the arcane ooze reminds me to always keep the prose evocative, even with simple descriptions of a creature.
"It flows against gravity, squeezes through cracks, and leaves smoking magic in its wake."
It sure does!