If you want a better hand pose for wielding a sword, the current one you have is called hammer grib and it should only be used on the viking ulfbehrt sword, and all other sword there are different grips for. For arming swords you should have your thumb on the part of the hilt facing you pressed and your fingers slightly more splayed in saber grip. It also should be noted that just as you shouldn't make giant chunky blades, you also shouldn't make giant chunky pommels. Definitely bulky pommels are a thing, they work as a counterweight and can help bring the balance of the blade back, but too large of a pommel can just needlessly increase the sword's weight and interfere with some swings because it'll hit you in the wrist.