I roll up the woolen fabric strip,really tight, then I place it in the cap. I cut a circle of my pretty fabric,just large enough to cover the woolen fabric with enough edge left, to cram down into the cap with my scissor point.Some times I use the hot glue gun to secure it into the cap, but that's not always necessary.
I cut a similar circle of fabric,the same color or something that matches the original piece I just used .I proceed to hem that circle of fabric and pull it with the thread like a drawstring bag(yo-yo style)then I set the cap, down into the little draw string bag and begin to draw it up tight,pinning it in place until I can tack it shut with coordinating thread.I use to glue a magnet onto the bottom of the cap,before this step, but not always, since many sewing machines are computer driven, and magnets and computers don't mix.Now I am applying Velcro to the bottom of the finished pincushion.Not always,but occasionally.
After the two fabrics have been secured to suit me, I rummage through my stash of pretty ribbons and lace,etc.,and find something suitable to cutesy it up a bit. I love making these cute but simple little pincushions out of materials that others most likely would throw away.
Now how's that for an hours work, or shall I say pleasure.
The pincushions that I am making lately, are so small at times, they need to be secured to something,so as not to get lost. Usually the sewing machine is a great place to stick one,although I have one stuck in every room.You never know when you'll need a quick needle and thread.