Currently, when you attack, there is a white trail behind your sword when you swing. But not every swing is an attack, and the difference in the two types of trails are very small.
My suggestion is make the attack swing either a different color, or make the "prep" swing much more faded than it currently is. As it stands, if your combat is super fast paced, it'll be a little tough to tell the difference between an attack and a prep swing in a split second.
If the attack swing will be changed, I suggest matching the swing trail color to the sword's edge color. Then fade it into the sword's blade color, or fade to white. Check out super smash bros for examples on how different trails can work for different swords 👍