Step 1:
Prefold over these 4 lines

Step 6:
Unfold the folds of step 5

Step 5:
Valley-fold over these 2 lines

Step 2:
First valley-fold over the 2 lines at the bottom-right. Then mountain-fold over the 2 diagonal lines in the middle. And valley-fold over the 2 lines at the top-left.

Step 4:
Squash-fold the flap

Step 3:
Fold the flap upwards

Step 10:
Pull the 2 ends outwards, in the direction of the arrows

Step 8:
Push/press the edges flat

Step 9:
Valley-fold the triangular flap upwards

Step 7:
Valley-fold the edge indicated by the arrow downwards.

Step 16:
Bookfold the edge indicated by the arrow to the left

Step 15:
Pull the flap upwards by making an inside reverse fold over these 3 lines

Step 12:
Push the 2 ends towards each other again

Step 11:
Mountain-fold the triangular flap to the inside of the model

Step 14:
Bookfold one layer to the right

Step 13:
Repeat steps 4 to 12 on the other 3 flaps

Step 21:
Fold over these 2 lines. Make these folds over the upper layer only.

Step 19:
Repeat steps 15 to 18 on the left

Step 20:
Turn the model

Step 18:
Bookfold the edge indicated by the arrow to the right again

Step 17:
Make an inside reverse fold over these 3 lines (=mountain-fold over the line in the middle and a valley-fold over the 2 outer lines). Fold the edge indicated by the small arrow to the edge indicated by the large arrow, do the same with the edge on the left.

Step 22:
Fold over these 2 lines

Step 28:
Repeat step 27 on the other arm, see arrow

Step 25:
Repeat steps 23 and 24 over these 4 lines

Step 26:
Repeat steps 23 to 25 on the other leg

Step 24:
Fold over these 2 lines

Step 23:
Fold over these 2 lines

Step 29:
Make these 2 folds on the upper layer

Step 27:
Make the same sort of folds as in steps 23 to 25 on this arm

Step 30:
Turn the model

Step 31:
Valley-fold over this line

Step 32:
Turn the model again

Step 33:
Fold over these 2 lines

Step 35:
Mountain-fold over this line

Step 34:
Mountain-fold over these 2 lines

Step 36:
Turn the model

Step 37:
Valley-fold the edge on the right to the edge on the left

Step 38:
Valley-fold over this line

Step 39:
Valley-fold over this line

Step 40:
Repeat steps 37 to 39 on the other hand, see arrow. Then turn the model again

Step 41:
Mountain-fold over these 4 lines

Step 42:
Press the body inwards from aside, see arrows. And valley-fold the feet upwards.