*performs the Tiger hand seal*
While he's performing the hand seal, he starts channeling regular chakra in his brain because that is the center oh the whole organism and a place where images about the realization of Genjtusu technique, which are an essential part, are formed. When he finishes, he also has neough of chakra for the performance of this technique. He starts thinking about the Gnejutsu he want to cast on the sensei's clone and after a short amount of time, he has it ready. He triggers the chakra in his brain and cast the illusion on the clone. He makes the clone's vision to start being blurry. But that's only the beginning. As the effects f the technique are getting stronger, the clone's vision keeps blurring out until it completely whitens. While the clone is dazed and confused about the loss of vision, he takes out a simple kunai and throws it towards the opponent head. The clone fails to react properly and he destroy's it.
This is actually a really great technique and I simply love it! I like how it's only a C-rank technique and requires only one hand seal, which means that it doens't cost a lot of chakra and effort, but is extremely useful. It makes the person imagine that they're going blind and that's very affective in a battle. Even the starting effect of blutting is enough to confuse the opponent and come up with a fast attack. The slight disadvantages would be the ease with which this technique is canceled and the fact that it's easy to figure out you're in a Genjutsu due to sudden blindness.
*grabs the sword with his right hand*
He starts running towards the sensei's clone and at the same time, collecting chakra in the center of his right palm. He finishes quickly and then moves the chakra into the sword, so that he could latter have better control over its movements. As he's really getting close to the clone, he raises his right hand holding a sword so that his right palm is paralel to the right side of his face. He gets to the clone and he swiftly swings with his arm down, making a diagonal slash on the clone's chest, connecting it's left shoulder and right hip. He has his right palm paralel to his left hip now. He makes the same move, only conversely, cutting the clone in the same spot and leaving his hand at the staring position before the combat. But as he swings with his right hand back into the air, he also loosens his hold of the blade and controlably throws it into the air. He uses his left arm to take out 4 kunais, one by one, percisely throwing them at the clone's chest. When all of the kunais hit their target, he starts to bend towards the back, countinuing the move by making a backflip. As soon as his hands start touching the ground and his legs start going up, he notices that the sword has started falling back and he, at the perfect slit of a second, kicks the sword with his right foot, and makes it rapidly strike the clone exactly in its hard. When he safely lands after the backflip, he makes sure he'll finish the job properly and he throws three shuriken towards the clone's head by using his left arm and manages to kill the clone after all three hit its target.
It's a nice technique that can cause some serious damage, but it's a bit complicated. The moves that the user makes are quite fast, unpredictable and also powerful and bring a good aesthetic impression. But due to the technique being made out of many parts and requires skill and many factors to be covered for it to work, it's rather easly to stop the user at some point of their perfomance and make the whole effort invalid.