My mom bought me two wood chairs. My brother stained them for me to match my table, but they got blotchy in places and look awful. I’d decided to spray paint them because the stain was so bad. After I finished the seats I decided I didn’t like it. So now I have two badly stained chairs with black seats. What can I do to make them look nice so I can take them out of my garage that hopefully doesn’t involve much sandpaper?