don't put wax on your table, you will get wax on your fabrics...
are you talking about the flat part of your sewing machine? or a table the machine is sitting on? there is a product...i will have to go look, see if i can find it somewhere it is a quilting...glider...it is some sort of (plastic,teflon,)material that helps you glide your fabric, but i think you just need to practice more, i don't know anyone who uses something to make their table slippery, we are usually trying to figure out a way to keep things from moving around on the table. but i really am unsure of just what surface you want to wax?