As an administrator of a club you can publish a picture album to your club's public page.
Under your club click "Pictures".
On this page you will be shown all the picture albums that belong to your club. Select the album you want by clicking it.
By clicking on the "Public" button the selected album will be published to the club's public page.
Afterwards, the button "Public" will change to "Not public". You can hide the picture album from the public page by selecting this.
Note: Remember that your club must have a public page for you to do this. You can find the guide here: Publish your club to the Internet