A really fun set of maps to explore. Tons of little things to find and explore, and I really enjoyed the creativity.
I will say, however, that they fall into the same pitfall a lot of beginner level-designs do, will lots of boxy, empty, corridors that can be poorly sized. They were hardly an issue except for Welistation, which was a bit labyrinthine with all of its corridors. Lots a secrets, but lots of back-tracking as well. Some more interconnecting paths would have been greatly appreciated.
My recommendation if you ever want to redesign the maps is to take the time to draw out your ideas on paper or even a in simple drawing program. It'll let you come up with a rough idea of what you want to make as well as catch a lot of simple design flaws early in development. This will save you a lot of time from testing and editing it in the map maker.
Overall, I enjoyed my time with your maps. Hope to see what else you can make.