After some research I found that the minimal dimensions of a good hammock should be at least 1.8 m by 3.2 m (approx. 70 inch by 125 inch). So I checked my stack of flags and found a possible good options to patch a double sheet of flag fabric together in this size.

The most important part of this step is to plan ahead. I numbered all my flags in my notebook and planned which seams I would do first and how I would build up the hammock sheet. In the end I went for two 1.90 m wide sheets that would allow me a bit of margin when sewing the two sheets together.

For the next part it helps to clear out the middle of your living room so that you have a large open surface to lay out your pieces of fabric like you intend to sew them. This way you are sure you put them the same way as you planned it.

To sew two sheets together, I placed them on top of each other, put in needles to connect them firmly so they won't shift or move compared to eachother and sew a zigzag line at about 1cm from the border of the fabric. The zigzag line allows a little strech in the fabric, which is needed when using it as a hammock.

When attaching the top to the bottom layer of fabric, make sure that all the seams are on the outside. After stiching the two pieces together, turn the fabric inside out and you have nice and clean seams.