Now how much knowledge do you have on the Sims 4?

I think I know quite a bit but Im always still learning features that I didnt know existed!.
For example I can build most types of roofs, make skylights that are open or closed, alter the overhang on either side but I only recently found out you can use ALT key to change roof heights gradually.
I look back at my old builds now and realiese how much I have learned about this game!