Step 1:
The used paper is 3x3 inches, brown on the front and light-brown / grey on the backside.

Step 8:
Press / fold this spot inwards.

Step 6:
Press the upper part inwards from aside.

Step 10:
Tape / glue all edges together

Step 9:
Press / fold the edge inwards on three more spots

Step 5:
Roll up around your finger.

Step 7:
Press the edge a little inwards to make it more round

Step 3:
Fold over this line.

Step 2:
Start with the fold above.

Step 4:
Prefold over these two lines

This is an Origami video tutorial for folding the Acorns: