Three Questions

1. How could one easily create curved and ramped trim (like in Marble It Up! or Marble Blasted) inside Constructor or Blender?
   Example:  marbleland.vaniverse.io/level/35843
   I may also want to add wooden railing, like in  marbleland.vaniverse.io/level/37000 .
2. How could custom challenge times be added to a custom level, along with their corresponding time colours and thumbnail frames?
   Example: an Insane Time beyond the Awesome Time.
3. How could a “Time Travel” be created that slows the stopwatch instead of pausing it?
   Example: the Time Travels in Marble It Up!.

I have minimal experience in text-based programming languages, so I may need a more in-depth explanation for the second and third questions. Thank you for your assistance.