If it's a clear decal, you might want to clean the back with rubbing alcohol first, as they are often quite dirty. All that extra little detail which makes it uniquely yours. Well, anything which will enhance your toys and make them unique and special. If you collect My Little Ponies , put a ribbon on each of their tails. Even if you don't have the originals, satin craft ribbon works very well and comes in a large variety of colors.
Combs can have the same effect.
There's nothing like completing a pony with her comb, and their relatively cheap in large lots on eBay. I also like to paint my Jem doll's nails. That's right, a manicure and pedicure. It's completely harmless if you use regular nail polish, because it easily comes off with nail polish remover. Also, there are even guidelines on the hands to show you where the nails should be.