I am a self taught developer that codes for fun, and I created a project that almost certainly has terrible code in it, but I would like someone who knows what they're doing (i.e. not me) to help me find the major issues with my codebase. Now this would sound like the ideal place to ask that question but my codebase is ~3000 lines and has many many files. Is this the right place to ask, and if so should I just post a link to my github? Of course I am not expecting anyone to look through the entire codebase I just want an overview of things that I could do better so I can avoid them in future.

Thanks in advance.