This is the best I can do, I hope it suffices. These methods are really pretty easy once you've done it a few times and I don't believe PB has these instructions available. The only instructions I have found are for posting photos to the gallery and that is rarely used.

There are other ways of posting pics, but they rely on 3rd party sites and those photos can be lost if the 3rd party decides to change it's rules like potobucket did.

Fish on!,
Noel