As mentioned plugins are useful tools that you could use to create things more easier, that being said; consider to use inspiration look up a few reference images on the things your creating.
That way you will have something by your side to spot those proper details, exploring and messing around studio including it’s tools - plugins is a way to find new things try getting into learning alternative programs such as Blender to create complex builds.
When getting tips and information it’s always good to develop something you enjoy doing or something you like. You will need to learn how to experiment with different things, including finding your own style and theme something you feel comfortable doing, if you find something keep developing in that workflow process.
You just need to start building as that’s a way you will find different techniques and information overtime everyone has there own approach when it comes to finding new things. Here is a thread that includes useful information/ tips.