My advice to you, while it may sound a little harsh, don't start any major projects for a while. A long while..
I've started a few big projects when I first got Blockland, they were good ideas and had a lot of potential. But I had very little skill or knowledge in building yet and they ended up being trash
Also, try not to spend too much time on this game. It's a great game, don't get me wrong, but it can be a little addictive. Sometimes I'll play a bit more than I should, many hours on end, and by the time I'm done usually the server I was on closes, I lose motivation for my project, or maybe it came out good but nobody really cares and it's kind of useless. It's very easy to end up wasting a lot of time on this game