These flags were of my design.
I made a paper pattern of the flag and cut it in three pieces. I laid each piece on a colour and added a seam allowance.
To put these together I just laid them right sides together and sewed in the original seam allowance.
Then I ironed the seam flat and cut one of the allowances to half a centimeter.
I sewed over it with a decorative stitch. Then I cut the other and did the same. This way I got a seam that was nice from both sides.
This was probably the worst at all the flags:-) I don't know why exactly the design reminds me of wings. Fairy's or bat's or a basilisk's..