A practical and inspirational step-by-step guide to creating 30 fabulous origami designs.12. 16. Waterbomb Many people a particularly mischievous children a have learnt. 9 The crease formed in Step 8 makes a square. Crease the four sides of the square as mountains . . . a#39;//aquot;)... like this. Flatten 4r.\f.. the centre square, then pushanbsp;...