Really simple: How do I post pictures directly from my droid to facebook as a status update?

Every time I try to post a picture to Facebook mobile from my Droid it posts the picture to an album and on my wall as an update, but I would like to make a written status update with a picture under it…I see friends status updates do this all the time. At no point does fb mobile ask me if I want to write a status/caption for the photo I just posted. How do I get it to?