Ok the basic of this jutsu is too surprise the opponent. Read over the jutsu. Talk about how it would confuse the opponent into thinking its a normal short-range punch and then the lightning mid-range fist surprises them.
Raiton Ketsuretsu Genkotsu|Lightning Breakdown Fist
Type: Offensice
Rank: A
Range: Short- Mid
Chakra: 30
Damage: 60
Description: The user gathers a large amount of lightning around one of his fists and makes a punching motion at the target from which an oversized version of his fist, completely composed of lightning, is generated(which is about as large as the user himself) and rapidly fired towards the target.
Alright, it would surprise your opponent because they would expext a normal punch, but would end up with a fist of raiton in their face. Since the jutsu doesent require handseals it can be performed quickly. Finally, the bright light from the raiton could also blind your opponent for a brief second.
Ok, gather your lightning chakra around your fist and punch towards your opponent. Right behind your fist an exact copy, which is as large as the average body, made up of complete bright lightning should be fired at the target.
-Ok, I gather raiton chakra into my fist, and punch towards a random tree. As I punch, an exact copy of my fist also punches the tree. Once the fist hits it, the raiton jutsu immediately destroys the tree.-
Raiton Ketsuretsu Genkotsu|Lightning Breakdown Fist
Type: Offensice
Rank: A
Range: Short- Mid
Chakra: 30
Damage: 60
Description: The user gathers a large amount of lightning around one of his fists and makes a punching motion at the target from which an oversized version of his fist, completely composed of lightning, is generated(which is about as large as the user himself) and rapidly fired towards the target.