Assuming its a gold crown 1 or 2 you start with the ball box mounted first center diamond centers with the center line of the ball box.
1. ball box mounted.
2. side skirt install at about 15- 20 degree then swing down ward.
3 forgot find corrasponding numbers stamped on all corners 2-2, 3-3 ,4-4 etc.
4 need to add metal clamp that has 2 bolts i think 3/8 head this will clam skirts together
5. add other long skirt and head skirt
if you have bolt on blinds/skirts then still start with the ball box.
Plastic moldings are a pain to install usually with flat head screws or nut and bolts. some have started to use black metal clips to hold plastic pices together and it works fine.