I shape/sand small pieces, such as around the eyes of the Deer, either with my Foredom flex-shaft tool or on the horizontal foam-backed 2-1/2 " X 7" sander, see attached picture. If the pieces are very small I'll use double sided tape and fasten them to a piece of scrap to save my finger tips.
Note: The sander only turn at about 1,100 rpm which is a little easier on the fingers.
The motor is a 1925 GE. and still runs like new.