Heading of sidebar element won’t left-align

I’ve played and played with it, but I can’t seem to get the heading (“Topics”) of the tag cloud section in my sidebar to align on the left, like the other widget headings do. I keep wondering if my image in the section above it is too big, but I’ve had that same size image there for a while, and it used to not do this.

See what I’m talking about…

I’ve also been trying unsuccessfully to put a line or two of space between the bottom of the tag cloud and the heading of the next sidebar item, but no number of <br> or <p> tags seem to make a difference.

Any help is greatly appreciated. 🙂