To add an image, find the plant in the database. Scroll to the bottom to where you see "Adding Actions", there is a link that says upload photo.
Click on that then click on the upload photo on the next page which will open a window to your computer where you will find the image you want to upload. Find the image you want click upload then follow the rest of the links. The find your acorn count, go to your profile page by click on the little man icon at the top of the blue sidebar. Scroll down your profile page until you see the acorn count.