If you create a graphic image, flyer, audio file, poster, powerpoint presentation, video, or any other multi-media resource and would like to have it shared/published in the Earth Charter Local Endorsement and Activities Guidebook under Creative Commons license (you will be attributed) then simply click the +add discussion in this category and provide the following:
Then you will see at the bottom of the page 'Attach Files:' with a browse button. Click the browse button and you will be able to upload the files from your computer. Limit is 5MB - then click 'Add Discussion' and wala - your resource has been posted and will be included in the next update of the guidebook.
Remember that by adding the resource you are agreeing to the Creative Commons license and that allows community members to use the resource which includes making adaptations and changes. For example if you upload an image they have permission to use the image in a flyer/brochure for their Earth Charter activities and may decide to change the color or add some other feature to the original. This is an open source resource sharing community and attribution will always be honored where possible.