...pisses me off greatly.
I mean seriously it's not that hard. Here are some examples.
Coloring
I hate it intensely when people use the paint tool to color in large sections/images. When people do that I scream, "YOU FREAKING MORON! This is going to take foreveer!!! Just connect the god dam anchor points and select the color you want!" Well not exactly like that I usually just say, "Use the pen tool. :/"
Improper Use Of The Pen Tool
Example A: People click and drag to make a line segment.
You moron! Click once then click again. Point A and point B. Jesus it's not that hard!
Example B: People click repeatedly to generate curves.
You lazy forget, just click drag, then click drag. Stop being god dam lazy. You can easily re-adjust the curves if it doesn't come out right.
How Do I Format My Original Workspace
Window > Workspace > Essentials
Come on this is just trivial.
I Can Only Select One Object
Double click off of the image. You're stuck in a layer, click out of the layers. My god!
Flare Tool
I'm pretty sure you don't need 20 loving flares on your screen.
Drop Shadow
Yes it's a nice effect and I usually use it to simulate ambient occlusion but don't loving overkill it.
Why Does My Image Look Weird When I Resize It
Yes it's a vector graphic so you don't lose quality when you resize the image BUT it keeps the same stroke size so it can cause some issues. Just simple change the stroke. ASDF!
Summary
Pisses me off greatly. If you don't know how to use, then don't use it. I mean of course practice makes perfect but don't practice on a group project that can effect my grade. Just leave it to me. :/
I find this more annoying than searching and pecking on a keyboard. Yeah, it's that bad.