Hi guys, First of all i feel ashamed asking this because i've studied a lot of Photoshop but a little of illustrator so i have two big questions about illustrator, please help me:
1. If i have some vectorial shapes, how can i make them look like old, i mean, I see a lot of vectorial shapes that have not some parts, i mean some parts are "earrased" so they look old, how do i do that?
Here's the example, if you llok the "B" has some parts missing, how do i do that? i don't think i have to earase manually every point, so please help here.

and 2.
All those vectorials designs that i sse that have lines, and things that opens like flowers and all those things are done manually?
Examples:



Thanks a lot
By the way, in my case it is not displaying the images so I'll put the link as well:
http://imeanit.freeweb7.com/bleeding_cowboys_2.jpghttp://imeanit.freeweb7.com/bb_userwork_11.jpghttp://imeanit.freeweb7.com/bb_userwork_3.jpghttp://imeanit.freeweb7.com/free_vector_foliage.gifDamn it is not working and i don't know why, well i'll fix it as soon as i can, meanwhile try to help me anyway please