As a more experienced game designer I will give some advice.
1)If you do not know where to start. You should start with a study of what the game design.
(Because every game designer knows that it all starts with the well-prepared design documentation.)
2)Never be afraid to share information on your project. We all have great ideas. Considering that you can not create a game alone, you look silly.
You should share the documents. Or no one want to work with you.
3)Begins with the small. It is difficult to create games. On a small walk simulator with 6 rooms I spent 3 months.To create a game need a huge amount of work time and resources. The harder the game the more difficult its creation.
(Dream big. But start small.)
- Game designer is not a director, it is an engineer.
You also have a lot of work. You have to prepare a lot of documentation, the game looks like?, how it works? , what the game says?, why so?.
Do your part and maybe there will be people that want to work with you.