There are other threads on here that go into more detail, but:

1) Whilst in the level editor and the map, which you have created, open the Climbey menu and click on Upload to Workshop (make sure you are happy with it!)

2) It takes you to the start of your level, so that you can play-test it from start to finish. This is both for you to check it and to ensure it is viable (checkpoints / inaccessible areas etc).

3) Once you have reached the end of your own level, your controllers (Vive) become the outer frame of your thumbnail snapshot. Be sure to get a satisfactory angle before pulling the trigger.

4) In my experience a level rated as RIDICULOUS in size, took mere seconds to upload. It may take up to an hour to appear in the list of available levels, with everyone else's.

Good luck!

thank you, i have made alot of maps so now i can finally upload them for others to play