https://www.mediafire.com/folder/koch5wphnh6fb/xhair.mumblelay
inside is a readme that shows how to do it. it's a very fast and efficient way of using mumble to make your own crosshair that works basically in any game. inside, i also have a template of a bunch of different quake crosshairs that you can resize, reshape, or recolor to your liking.
also i included a sample one inside that you can modify using paint.net to something that is better fit to your liking. (need a transparent background and idk how to do it in microsoftpaint so i just use paintnet)
i think they are way better than hud crosshairs because you have alot more options. some people say that mumble overlay gives you input lag but i doubt that. also you must be a savant or someshit to notice an addition 1ms of input lag lol.
if you use this and you are streaming and you have "crosshair 0" ingame then nothing will appear as your crosshair in the stream. this is because both OBS and shadowplay only record the "raw" input from the game. you will have to add a image overlay in obs for other people to see a crosshair or just make a super tiny style5 dot in tf2. the mumble overlay overlaps the normal crosshair anyway so dw.