This a a great video from BERNINA about needles. Figuring out which needle and thread to use for your current fabric will save so much frustration and make your stitching smooth and beautiful. It is important to test a few samples before starting to get it right. Keep many types and sizes of needles on hand so that you can find the correct one. Needles are the least expensive tool in your sewing room and one of the most important.
I have posted a video highlighting the BERNINA #21 foot as the perfect way to add cording to the edge of a project. Here is the link to the video on my You Tube Channel. Be sure to subscribe to the channel when you get there.