Sleeve Head- the sleeve head is used to support the sleeve cap in custom made garments like jackets and coats. It's sewn around the armscye. It prevents garments, like men's tailored suits and jackets, from forming dimples at the sleeve cap and allowing it to have a smooth, sturdy roll.
Polymer clay steampunk tin by ValerianaSolaris on DeviantArt. She says "I took a simple aluminium tin (size: 11 x 11 x 2 cm) and covered it with Fimo/polymer clay. The clay was stamped, textured, dusted with Pearl Ex pigments and embellished with clock parts. After baking, the whole thing received an antique patina." Further down in the comments section she goes into even more detail about her technique. Excellent.