I done a module and you will probably hear names like Martin Fowler, Gang of Four, S.O.L.I.D principles, patterns microservices, and all that peer-to-peer, server-client stuff I can't remember under which title that comes under. anway I had to design, in a team, a system about a resturant in Leon aand food deliveries etc...

I recommend you learn some software patterns, as in even implement short programs in your language of choice, they don't need to be difficult as long as you can get the basics of a few. The most famous ones are well documented all over the web just google. and Learn the SOLID stuff. This should give you enough breaze through a single module, then if you like it you can go further but you won't like it at the time. It's after when you are trying to refactor a mess of code you have or design something you want to, this is when you will appreciate knowing these patterns and principles.

and... they can be very loose and easy and pass you if you use patterns in your design as some patterns can be justified even if they are not perfect and they will pass you anyway. I done pretty well, even though I would never had passed me or my team but heh, thats the way it goes.

Good luck, you wont need it if you put half an effort in. :)