If the decorations are glued on you might try using a blow dryer on low heat to see if the glue will soften/melt a bit to where they could be easily removed; then gently wash the leaves with a mild dish soap and rinse well, that should remove the leaf shine.
~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!
