all you will need...
Measure and cut the fabric with length 60 cm and width 40 cm.
Fold the fabric in the middle and correspond the edges (create a parallelogram 30cm x 40cm)
Pin the 2 opposite free edges in straight line (2 cm from the edges of the fabric).
Make 2 straight stitches at the 2 sides that we had already pinned.
Bring the pouch in front of you as you see at the photograph.
Make the fold to abut on the stitch.
Measure 4 cm from the corner and pin in straight line so you can see a isosceles triangle. Do the same in the other corner too.
Make 2 straight stitches both 2 corners.
Cut outside of the stitch 1-2 cm, both 2 corners.
When you turn the pouch inside out you will have this result.
Turn the pouch outside in and fold all the perimeter at 5cm and 1cm more (check the pattern). Because this is difficult, it woulf be easier to pin it. Make straight stitch.
Unstitch a small part of the top-side stitch and create an opening 2 cm. With the needle and the white spinner to us we fix the corners of the opening. Pin the ribbon with the safety pin go through the opening. After makes the complete circle and comes out from the opening, remove the safety pin from the ribbon and cut the ribbon diagonal.
We draw lightly with the pencil our drawing. Make widely needlework with the thick colorful thread following the drawing.
Sew also the 2 buttons in the middle of the drawing.
...and the pattern (project in A4 paper)