This could not be easier!
I had my son make this box for me out of a new leftover fence board,
then I set about making it look old and weathered.
First I dry-brushed some grey paint on.
That just means you wipe your brush off before putting the paint on the wood
so it doesn't cover completely.
Keep a rag handy to wipe even more paint off.
Next, do the same with white paint and blend it with the grey paint.
Don't wait for the grey to dry.
You can sand it a little, but the wood is already showing, so you don't need much.
Cute as a button!