use flash to CREATE CONTENT

Issue Summary

we have a content type including an image
the image saved[uploaded] by the user is not a file on the harddisk, but the result of image manipulation done inside a flash UI.

so, user will press: [create image] and will be shown a flash ui to manipulate the image
when he'll press save, flash will post a image file to server.
my understanding is that basically this would work just as a normal content creation, only the content is not POST from a html form but is post from a flash.
does anyone have experience/suggestion regarding this?
thanks!