I Have A Question...

I wanted to know if anyone can help me solve a dilemma?!  I have noticed that when I follow someone's blog, the photo I have on my profile does not appear.  The generic blue box appears instead.  I've tried to detect what I was doing wrong myself but was at a loss.

So.... fellow bloggers... help!  I really love my cute little picture and the little blue box... not so much!


     Thanks...