It's definitely possible. :)
A quick version of creating a draggable sticker from a canvas, borrowing from the magnetic poetry example:
on click do c:card.add["canvas"] c.draggable:1 #I'm calling the canvas that your user is drawing on 'source' for the purposes of this example# c.size:source.size #this makes the new 'sticker' canvas the same size as the one that we're getting the drawing from# c.paste[source.copy[]] #this copies the drawn image onto the new draggable canvas from the "source"# c.pos:(card.size-c.size)/2 end