I recently was tasked with trying to make some lamp shades with a limited budget. I'm used to a limited budget. I check out some shades I like at different stores in the area known for decor and then I went to work.
I grabbed some shades for a buck at the local thrift store....the less 'curve' the easier it is to attach your fabric.
You can use adhesive spray, or a good ol' glue gun. I measured the shade using a newspaper (wrapped it around, creased the edges, and then I knew how much fabric to cut. I bought some fabric I liked and got to work...
I found some ribbon for half price to make the edges (glue gun) and a flower in the hair bow section of the craft store.
I used a base to a lamp I sprayed with water/mirror spray. That tutorial lives here.
I also made the burlap one (at the top) and instead of a trim I just glued some 'ruffle's from scraps of fabric.