After placing images in to my content I add a bit of padding But, no thing happens. I can add 25 px to the Vert or Hor. And the text will still be resting against the image.
You might try giving your image some margin as opposed to padding, as margin will effect the distance between the text and the image. When I insert images into my content I usually go with something like this:
This will give you an image that is left aligned with text wrapping around it and a right margin of 10px to keep the text from butting up against the image. There are quite a few techniques to do something like this, I'm sure some other folks will have some great suggestions as well.