Uhgggg really sorry I didn't get to this! I was SWAMPED fixing all those pages!
But heres how!
First you have to choose the right template by clicking "Choose Another Template" at the bottom.
Depending on what template you use your picture will be displayed differently.
To actually add the picture you simply put the name of the picture in the collum you want the picture to appear in.
Example: To put a picture in a Recipe template you have to put the name of picture you want in the collum that says "item 1". Other templates will be different but it should roughly be the word "image" that you have to put the picture name into.
The word has to be what the file is named though. You can't put Tree Log and hope to have a log show up. The file is called Log. So you have to put in the same name, Log.