I have a habit of sticking my crosshair too close to the angle. Not dead on but definitely too close. But deathmatch doesn't feel that great for figuring out how far from the angle I should hold. Is there a better exercise?

I usually play controllers and initiators, but I want to play duelists sometimes (I want to learn Jett). However, I'm really bad at entrying as a duelist, especially when I don't have a flash or any knowledge or assisting utility (I'm in lo...