Reading and learning here.
I think that another option if you don't want to put the source away from the image, is to start the post with an introductory paragraph and then place the image + source. Or simply fill in the Description field that PeakD offers.
I will definitely start using some of these options in my blog and thus improve the aesthetics.
There's various ways to do it, the take-away being that presenting posts with image source text as the very first thing people read can be avoided, and should be.
I must confess that I have made that mistake. I will avoid it from now on.