Here is the official explanation of what the Activity is, which can be found on the same page where submissions should be uploaded:
Space with no space? Show us your micro space builds of what you think a new space station should look like!
A new designer videos sees the two LEGO talents behind the set explain how they adapted the concept for an official model.
This is part of a series on LEGO Ideas hat gives little tasks for builders to get involved with – there are no prizes, they are just a way to get involved with building something quick for fun. Each challenge is intended to be something quick and fun, unlike the more in-depth building required for a competition or product idea.
The deadline for this Activity is February 11 at 10.00am CEST.