Cut paper to fit the bottom of the Altoids tin. Use a pencil to trace the tin, then cut with the scissors. Repeat for the top.
You can use a rounded corner punch to give the paper a more finished look.
On the bottom, brush a coat of decoupage onto the tin and smooth one of the pieces of paper on top. Let dry.
Brush another coat of decoupage over top of the paper to seal it. Allow that to fully dry.
Decoupage the panel to the top. Use the other piece of paper and brush more Mod Podge on top of the lid to adhere the paper down. Allow that to dry.
Glue down embellishments with craft glue.
Carefully add Dimensional Magic. Very carefully pipe the DM around the edges of the top paper panel.
Let dry completely before using the tins.