Taking the following facts into account:
- Mirrors and the portals in the real game work very differently
- There still is no mirror in Blockland even though it has been suggested multiple times
- This has not yet been made
- You needed to ask a question this broad
- Your name is terrible
I would say that you will not be able to make this due to your lack of skill and/or engine limitations.
You were a little harsh here, Demian
Mirrors were disabled after GSF Ghost used them in his house remake, because it would cause a ton of errors and show duplicates of a build, example, 256,000 bricks turn into 512,000 bricks
also created a rendering issue on the player, where you could look at yourself in first person and you would be invisible