When posting a picture using Mobypicture, the picture itself is uploaded before the tweet has been written. This means that both on Mobypicture and any connected services, the pictures are distributed without any form of description or context. I would like to be able to either be able to set a custom description per picture, or delay the upload until the tweet is sent, so that the tweet can be used as description.

Something to consider though, is that Mobypicture has a title field and a description field. Most connected services use only the title field, and a tweet is short enough to fit there nicely. I therefore think it'd be ideal to enter the tweet (minus picture link) in the title field.