Thank you. Haha, glad you enjoyed them :)
I think you sell yourself short. You made some cool tracks.
Over the last few years, I've written quite a few tools for making ambient that I use a lot. You can find 'em here: https://github.com/JoepVanlier/JSFX . They're all free, so can give 'em a shot if you have a few hours to spare.
The ones I'd recommend for ambient are Swellotron, Reflectosaurus (1, 2), LavaVerb, Yutani and Amaranth (in that order probably). Especially Swellotron and Reflectosaurus can be good at creating source material that you can slice from to build soundscapes. The first takes two inputs and blends them together in a reverby way, while the second is basically a souped up delay plugin that allows you to link delays to delays and add effects to each delay node. They were originally written for REAPER, but there's a plugin called YSFX that allows loading them in any DAW.