Remember, everyone has to start from the beginning. You can't start with a project without removing/adding things, replacing things, etc....
If you just add more stuff & detail stuff (like that welcome to funland sign), your builds will become better and better. Just don't remove your world or the whole project because you think something is wrong. Believe in yourself and maybe you can get more inspiration the more you build. There are always YouTube videos and good builders who can help you out. Good luck with further projects (and this one of course!) :)