Formatting Assistance?

Can any other bloggers help me with formatting?

I'm having a really difficult timing with paragraph spacing in my posts due to photos. It seems like whatever I type after a photograph has goofy formatting.

I'm writing in the "compose" part of blogger and then I "preview" my post. Somehow when I publish it, everything changes. WTF?!?! I'll write a post, and then spend another 1/2 hour fussing over the spacing. It's really frustrating me this week.

I'm also going to check out any help features on the webpage, but thought you all might know some tricks.

THANKS
-b-