I’m pretty sure it’s mousse
You could no longer do standard seaming, but you could do free motion embroidery.
If you want to fix this there are a few common ways that they get broken and fixed from home:
thread could be jammed, just remove the needle plate and clean
hasn't been lubricated in a while, either take it in and have it done or do it yourself with a drop of sewing machine oil
or because they're dropped, in this case just look for a switch.
if it's not any of these, you may want to take it in and have it looked at :-)
Chicago-based artist Robert Lostutter uses the small scale to make an intimate viewing experience. He uses this kind of scale on his famous painting in 1981 named "The Hummingbirds" which uses watercolor. It is compose of small painting them put them on human faces.
