You sew half hexagons, 3 pieces together. Lay them out as a whole block on a design wall, bed, floor, etc...
Sew 2 more halves together and place them next to the first one. You need to place the second one upside down to get the sides to match up.
Keep going until all of the blocks are sewn and switch the blocks around til you are happy with how they look.
Once you are happy with the layout, then you will sew the halves into strips vertically, and then all of the strips together :D:D:D