Trying to crop layers in illustrator! (beginner)
Hi,
I have some artwork which is split into three main layers, with other layers within these. I am trying to crop all the layers within Layer 3 to be in line with a path in another layer, but when I try to use the crop image tool the options are greyed out and I can't seem to get a clipping mask to work either. The second image attached shows the path I am trying to crop to.
I know how to do these things in photoshop but illustrator is proving difficult to grasp! Any help would be much appreciated.

