I am trying to create a small board with 12 exposed-copper rectangles for a music project. Each copper rectangle is desired to be an exposed-copper area for capacitive touch with a human finger. I've done 2 JLCPCB orders with a design I thought would work, but both times the rectangles were covered by Silk. I don't understand how to specify a "hole" in the silk to expose the copper rectangle. To be specific, I'm drawing these rectangles on the "Top Layer" so the copper is there, in the right shape. But since it isn't a pad, it's being considered a trace or something, and hence covered by the TopSilk, no matter what I draw on TopSilk layer. Happy to share screenshots or actual EasyEda or Gerber files if it helps. There must be a way to tag the rectangle as a pad or something to expose it. Or I'm open to any other suggestions, thanks!