How to pakia a picture to fit the club banner?

First of all the image wewe want to pakia as a banner should be 800x100 px (800 width and 100 height)
Then, if you're the creator of the club, hit the edit club button, go to the bottom of the page to the Suggest a banner and icon part, submit files from your computer (you have buttons for that right under the banner & icon)
At the end, don't forget to hit the Submit button and you're done.
Important! If you're not the creator of the club, wewe won't be able to change anything.