In my blog sidebar I am giving away a free pattern. I put the image for the item to be made as the click here icon. The picture is too big and distracting. I went into my media library, clicked on the "edit picture", went into resize picture, put in half the pixel size and clicked "all sizes" even though I would rather have just the thumbnail. I couldn't save, the button was not clickable. I also clicked update. Nothing changed, I reloaded the page, nothing changed.
here's the link to the page
Am I missing something? thanks, Diane