Some people on my instagram were curious as to how I made my top. Since I have an international instagram I'll be doing this blog in English so I can link them to it. If it's wanted I'll make one in dutch, but I'll try make this as easy to follow as possible.
Step 1. Making A Pattern.
Take a tank top that is roughly the shape you want it to be (I only used the back tbh, so even if it's low cut in the front you'll still be okay) and fold it at the length where you'd want your top to end. Place it onto pattern paper and trace it. That's how I got my pattern.
Step 2. Cutting the fabric.
Place your pattern onto the folded fabric (so you get two equal panels) and pin it in place. Cut the fabric in the shape of your pattern. Seam allowance is not really neccesary, since you're most likely using Lycra as a fabric and this will stretch enough to allow a snug fit. If you don't feel comfortable with that however, leave a bit seam allowance. Now you have two identical panels. I cut a bit from the neck of what would be my front panel to allow for a better fit. I did this by folding it in half and starting from the middle.
Step 3. Sewing The Panels.
Now you have a front and a back panel you sew and hem it as you would with any shirt. A roll hem is not needed because Lycra doesn't fray for as far as I know. Use a stretching stitch and be sure not to stretch the fabric while sewing. Hem the raw edges and you got the start of your top.
Step 4. Adding Elastic.
Now this is optional, since if you did your last step right (which I did not) you'd have a perfectly functioning top by now. However, I missed a few cm at the bottom so I added some fabric to put an elastic in so it also would not go up in the water. I did this by cutting some strips of fabric and sewing them together like you would if you were sewing a ribbon or so, however I left the top open. I sewed the top of the strip along the bottom of the swimtop (getting confusing, sorry) which closes the strip. I then added in elastic and sewed everything shut and I was good to go.
I sincerely hope I made this a bit clear to read, if you have any questions please do not hesitate to contact me!