Is it possible to felt velour yarn and still have a nice project?
Immerse the silver in a bowl containing a handful of washing soda and a handful of foil bottle tops or kitchen foiladd enough water to cover the silver(Tarnish collects on the foil - but it will also collect on any silver sticking out of the water)Rinse in hot water and dryWipe with a long-term silver cloth.
Velour is an acrylic fiberIt will not feltYou need an natural animal fiber such as wool or alpaca to felt.