Let's go GS Tourney!!

So its a little late to be honing our skills, but the number one thing that we can change is team work. The team coming up is very good, but judging from so of their players, they may be relying wholly on their own skills, where we can see a huge improvement very quickly is in team work.
I'm going to suggest what I think will make us substantially better:
1) More Callouts. If you start shooting at something, let your team know that there is an enemy there BEFORE you get blown up, or if you see an enemy that you aren't going to attack call it out.
2) Better Callouts. Don't just say enemy is a ...., say class, location and side. e.g. Scout inbound from 4th point right side behind the train.
3) Better cohesive pushes. If you see a teammate ahead tell them to wait for you. Likewise if you see a heavy behind you wait for him.
4) Cover each others weaknesses. If you see a pyro harsing a scout, or sniper, don't run from the flames, join the fray! Watch eachothers backs we're also playing against an incredible spy so read names! If someone asks is that you.. say where you are don't just say yes.
Better yet ask if person in question is such and such a place. If we can start doing these things we'll see a huge impovement instantly, whereas we don't have very much time to get better aim