I went to wallmart bought some picture frames, 
then took that cheep glass out and put some uv, 
non-glare protective glass in with an acid free 
backing paper and got some of the scraps from 
that and put them inbetween parts on the cel that 
didn't have any paint on them.  So that the cel 
wouldn't touch the backing, just in case my air 
conditioner breaks i won't have to worry about 
the cel sticking.  The only problem i have is 
that i can't get any uv protected plexiglass.  I 
live4 in California and several times things have 
fallen of my families walls even though we are 
about two hundred miles from any major fault 
line.  So I each cel mounting with plastic wall 
anchors and L brackets to keep it from coming 
out.  I need to find some uv protective 
plexiglass.  $3 for frame , $12 for glass, $5 for 
backing.  20 dollars altogether.  With the scrap 
backing it makes sure the cel doesn't slide 
around any.  But professionally framed one look 
nicer.