You will need:
1.half a metre of 4-way stretch spandex jersey for swimwear (I get mine here Tia Knight Fashion Fabrics, highly recommended).
2.ballpoint stretch jersey machine and hand sewing needle
3.polyester thread (definitely not a natural thread, unless you want your swimsuit to disintegrate in the pool!)
5.swimwear block pattern
10. fabric shears
11. paper scissors
12. felt pen
13.4mm elastic (approx. 3 metres depending on design)
Step 1: 1.Draft the pattern.
I experimented with an unusual detail on the back as you can see, but due to the nature of the fabric it doesn’t stay close to the body, so I don’t suggest trying to keep a back panel in and using cut-outs at the waist. I changed this to that the top back fastened like a bikini and the bottom was a simple bikini design.
I took 4cm off both side seams on the bottom of front and back pattern to make room for a tie. I lowered the waist cut-out so that the place where the ties will go measures 4cm. To keep things simple I also made sure that the the top back bikini ties would be 4cm width.
Cut out your pattern once you are satisfied with your design.