I was fortunate to see Rosa Rojas at AQS demonstrate how to use the Appliquick tools for very small appliqué. There is a video of the same at The Quilt Show website. https://thequiltshow.com She is a delight.
I already have the tools but purchased the scissors, which are really, really nice, and more of her stabilizer. They really do help turn those small and sharp curves. She needle turned a small circle the size of a eraser head while we watched. It was pretty amazing!