I would recommend doing it outside as it stinks and the rust from the steel wool will stain concrete so do it in a shop or over the road. DIY Vintage Wood Stain look. (How to age new wood). Good for all things wood!
Holiday Card Wreath—cute idea—would look even better with the decorative clothespins. Use wood glue—affix small wooden clothespins to large embroidery hoop outward & inward, spaced 1 apart—suspend from ribbon—clip cards as received.
How to make over your folding chairs with spray paint