Finally I made it... It was a lot of work to explain it all.
I hope you understand it and will be able to make this work of art as well.
Contents of this video:
1) Cutting the paper
2) Folding units at 1:32 minutes
2a) left hand unit at 1:45 ,,
2b) right hand unit at 3:45 ,,
2c) hinge/connecting part at 5:16 ,,
3) constructing clusters at 5:56 ,,
3a) our aim: 3 left hand units + 2 hinges at 6:41 minutes
3b) 3 left hand units (an intermediate step) at 6:53 ,,
3c) 3 left hand units + 2 hinges at 8:10 ,,
3d) 3 right hand units at 9:53 ,,
4) Assembling a star/cube at 10:59 minutes