I made a small F.A.Q for some questions that keep popping up.
Q: How do I get my hud back and my camera normal again?
A: Disconnecting from the server should reset it. If it doesn't, restart TF2.
Q: Is it possible to get my character on the center or right side of the screen?
A: Yes, "cam_idealdistright 0" should move the camera to the exact center on the X axis and "cam_idealdistright -70 " should move the camera more to the left.
Q: Is it possible to taunt if I want to make a screenshot like this?
A: Taunting is a bit weird in this case, because it will position the camera behind your character again, but keeps the angles you entered before. If you want to taunt and make a good shot, I recommand using the command "host_timescale #" to slow down the speed on the server. Host_timescale 1 will be normal speed, 0.5 will be half the speed, etc.
Q: Is it possible to try on items I don't have on the screenshot?
A: Yes it is. You can type "itemtest" in the console to open a window where you can select any hat/misc you like. For more information on the itemtest command, you can read this
Q: Can I make a screenshot like this from a replay?
A: Yes you can. Just go into your replay, find a good spot and type in "cl_drawhud 0" to hide your hud. More information about replay screenshots can be found in this
Q: How do you get those nice lighting and shadow effects on your screenshots?
A: I make those using Photoshop. It's a bit to complicated to explain in this guide though. You can add me if you want me to help make a nice screenshot for you.If you still have problems or unanswered questions, feel free to add me.