10. Make sure you require the module that you create
The core code and optional components that improve or substitute the core code are composed by Magento. For Magento 2, there are over 100 out-of-the-box components available in the form of plugins, themes, and language bundles. The architecture of Magento enables changes by having you create your own components.
For any functionality, you will still need the feeling to create a new module, but before you make sure that it really needs you to create a new module. You can get the default code and overwrite it instead of creating a new module from scratch to suit your specifications, which will save you a lot of time and trouble. Also, ensure that you rewrite only the necessary code when overriding the core for rewrite and that the new class extends the original main class to follow other codes.
The first thing you want to make sure is that correct naming conventions are being followed and case when designing any module. When designating conventions for files, directories, methods, and classes, you must preserve continuity.
Magento 2 needs a lot of extra coding, but it is built on basic and straightforward principles, so it is probably not the best way to do it if it is too complex. If you don’t know how to do it, then look at the source code for Magento. The Magento code is also a source of inspiration when something new is approached.