1
take 4 pieces fabric and fold it like you see at the picture.
2
make with these 4 pieces of fabric this form, just fold them over and under each other
3
sew them together on the line that you can see at the picture, now the 4 pieces are sewed together
4
take an other pieces of fabric with the same size as the 4 pieces you just sewed together, this becomes the backside of your pouch
5
sew the 4 pieces (the front side) together with the backside
6
cut off the remaining fabric alongside the seam
7
turn the pouch inside out and you're done.
sorry for the bad english and the not bright instructions but it was hard to explain