To make the collar, I took cotton English velvet and embroidered French lace. You can use less expensive velvet, but this material tends to stretch, you will need to glue it from the back with dublerin. Lace does not need much, you need a certain number of fragments, so in some cases one meter will be enough, in some cases a little more. But you need to choose lace carefully, avoid hard cord lace or thin, inexpressive cotton, it is not advisable to use linen type of lace. Lace can merge with the base, it can be lighter or darker.