Copter Dude - I am trying to release my first game on Steam

[biala]

I am making funny 2D arcade action game which I plan to publish on Steam. I have made many many apps and other software but this is the first time I am trying to make a game. I am also new to Steam and have no idea of game marketing for Steam.
So if you have done these things and can help thank you VERY much!

Today the Steam page of the game become live and the next step will be short demo.
Here is game page:
https://store.steampowered.com/app/4839160/Copter_Dude/

Release date is set for August 12 so I don't have much time

Please help with advises and suggestions.
Also how to contact and showcase a game to content creators?