What should i do with these tools of art?

Question:

What should i do with these tools of art!?

I have art pens but i don't know what they are good for!. Here are the sizes!.

0!.05
0!.1
0!.3
0!.5
0!.5
0!.7
0!.9

What would you use for what!.!.!.

ThanxWww@QuestionHome@Com

Best Answer - Chosen by Asker

well, they are all different widths!.!.!.so if you want a thicker line use the largest and thinner use the smallest!.!.!.
just experiment with them and have some fun =]Www@QuestionHome@Com