So you understand the waving a stick thing better, along with the "levers and S---" comment
Lever - Wikipedia, the free encyclopedia
TL;DR - basically - think about using a shovel to scoop dirt out of your yard. The shovel spade (i think that's what that part is called) is the short part, the ground you're digging and pivoting against is your fulcrum, and your load is the mound of dirt you're lifting.
The Further you are from the fulcrum, the less work it takes to lift the dirt out (longer handle)
The further your load is from the fulcrum, the more work it takes to lift the dirt out (deeper hole)
Now think of your arm and lifting buckets of water. Is it easier to lift a 5 gallon bucket of water in front of your body? Or at arm's length?
Apply to a paint marker. The further it extends from your body, the harder it is to lift
About your fear of getting picked last? Don't be worried about it. People pick me first because I have a jersey and pants - or my name on the back of my shirt - or because I have a marker that doesn't look like a rental gun. Does this mean I'm good? Hardly. I've met people who can shoot better with their <insert seemingly crappy marker here> than I can with my $1200 setup.
The biggest things you can do on an airball field to be an asset are:
1) Communicate. TALK to your team mates. Scream. Get comfortable throwing your voice - and if you see someone - call the bunker. At a minimum - make sure your back/mid knows. (For what I can't shoot - I can communicate... loudly enough and effectively enough that I've been known to throw the other team's calls off.... yeah... loud
2) Follow the plan. As you're walking to your air bunkers - usually people will be asking who is going where. Fill in where you see a gap. 2 on each side, one in the middle is the usual 5man format. If there's a vacant spot - its yours. No complaints
3) Don't be afraid to get hit. Being squeamish and hiding in the back behind a can or tower is going to do 1 of 2 things:
a) Get you noticed as being timid and afraid of movement (getting hit)
b) being the last alive and requiring a run-thru or bunkering to get you out. Being bunkered isn't fun. Being hit at close range isn't fun, and having 2 people run you down simultaneously isn't fun.
So 3- Take chances. Nobody is going to be pissed at you for getting knocked out. It happens. You're honestly not letting anyone down.