We have a part of the star picked the bed for my 2.5 year old daughter at the wall. Attaching was easy and no problem. Before brushing we always rotate in the room at the light and the 10 minutes are enough to get out - if it's dark - to create a beautiful glow of the stars. Being quite dark, it is not even with us, because we have infected a small night light. My daughter is super and will now always even turn off the room light!
The different shapes are super! Assemble the best in the dark so you see the same whether it's nice spread.