What is the best way to: Adding the pictures to bottle caps

Options:
[+] Take the bottle caps and trace around the pictures with a pencil and cut the trace with scissors , then use a drop of glue to glue the pictures to the insides of the bottle caps.;
[+] Take the bottle caps and trace around the pictures with a pencil and cut the trace with scissors , then use a drop of nail polish to glue the pictures to the insides of the bottle caps.;
Answer:
Take the bottle caps and trace around the pictures with a pencil and cut the trace with scissors , then use a drop of glue to glue the pictures to the insides of the bottle caps.