Crafters of Reddit I need your help!

I am currently making a kite for a project I have in geometry and have some intricate designs I plan on putting on this kite [here] (http://images6.fanpop.com/image/photos/33100000/SNSD-I-Got-A-Boy-Emblem-imannessa99-33161532-500-500.jpg) and [here] (http://player.gomlab.com/files/logopic/tumblr_static_snsd-i-got-a-boy-logo.jpg) I (especially as unsteady handed as I am) could not possibly do these designs by hand. So my question since the kite is made from plastic bag is what way is there to copy these designs onto a plastic bag? (Right now the only option i can think of is to order the stickers online but since its 10 of them at $2.25 each I kinda want to avoid it)

Tl:Dr Can't freehand so how do I copy designs onto plastic material?