To easily create a new page, click "Create" up top, and then click on the link for the type of item you're creating the page for, ie "Animal", "Building", "Decoration", etc. Input any information you have for the item, save page, and then click the Upload link in the infobox to upload your image to the correct image name.
Alternative:
(Not sure for formatting, just adding as I access these crops)
Whiskey Peat
Sun Poppy
...more