Everyone will start with a tiny bowl for practice and them make a medium or large one.
The plastic templates used in class for each vase shape can be traced for free. The book, "Fast, Fun Easy Fabric Vases" by Linda Johansen (available on Amazon and other online sellers) is highly recommended.
Requirements:
Sewing machine capable of zig-zag stitch, 2 fat quarters, 1/2 yard of Fast2Fuse heavyweight interfacing (available at QP), large scissors and snipping scissors, rotary cutter, thread to match and contrast with your fabric, marking pen and sheet of template plastic (also available at QP).