Align your images. Please. For the children.
I can't tell you how many blogs I've read where the blogger simply put the image in the post and then started typing.
When you put images in posts, left or right align them. Only center images to make an impact (as in a showcase, or splitting up content sections) and when you do, make sure they take up at least 80% of the post divider.
Seriously. Align your images.