P - Press Stud
Press Studs can be used as a embellishment detail or as a closure for a garment, you can buy a gadget to attach them of Ebay. They are great for a clutch bag fastening.
Q - Quality Fabric
Buying quality fabric gives you the best results, there's less shrinkage when you iron it and its a lot easier to sew, and you will have the best results at the end of your project.
R - Reverse Stitch
A reverse stitch or lock stitch, locks in your row of stitches, stops them from unravelling and adds extra strength. Read the instructions that come with your machine to find out how to use the reverse stitch function.
STV will be posted soon.