Alright, I'll explain these three to you to show you how you should do it.
1. For the Stone Avalanche technique, the user will take advantage of the relationship between Earth and Lightning, putting Lightning's superiority to the element to good use. By flowing Lightning into a cliff or mountain or other large structure made of Earth, the Earth will be torn apart, causing the dislodged pieces of Earth to fall towards an opponent standing at the base of the Earthen structure.
Pros: The technique can function as a good distraction, as ignoring the rapidly falling rocks would result in being crushed to death and buried. Depending on the range and size of the structure, the falling rocks can be widespread, making dodging or avoiding the rocks a risky option with larger structures. During the opponent blocking the rocks, the user can capitalize and attack them again with an attack. The range of the technique going up to Mid-ranged indicates the user can affect Earthen structures mid-ranged from them, allowing them to avoid being caught in the technique themselves.
Cons: Because the technique requires a structure, the lack of one would require the user to create one themselves with an Earth-style ninjutsu, leaving a window for the opponent to interrupt the combo before this technique can be used. Being within range or under the structure would also leave the opponent vulnerable to being caught in the jutsu themselves.
2. This is a rather simple technique. Much like Chidori and Raikiri, the Lighting Strike Horn jutsu works by flowing chakra into one's hand and vibrating it until it transforms into Lightning-natured chakra. The user will use shape manipulation to cover their hand in this lightning, causing it to glow yellow, while extending their fingers straight forward. The user can then use shape manipulation further to launch the lightning from their hand in the shape of a horn, creating a projectile that can harm the opponent.
Pros: The technique doesn't handseals and can be used very rapidly. The user can fire multiple projectiles from the mass of lightning as well, and by moving their hand, can create a hard-to-avoid barrage.
Cons: Firing multiple projectiles means each projectile will be weaker than than firing one or fewer projectiles. For example, firing four projectiles divides the C-ranked power of the technique evenly between all four projectiles. Firing three, while each would be stronger than each in four, still follows this logic. The user also has to maintain the lightning as he fires, meaning he can't use other jutsu while using this technique.
3. The user will imbue lightning into their blade via shape manipulation, as one would when imbuing raw chakra into normal projectiles, such as in the manner as Asuma's jutsu. By remotely controlling the lightning to float in front of them, the swords will also float as a result. The user can then divide the lightning to multiple the blades and, through handgestures, allow the user to launch the blades towards the opponent for an attack.
Pros: By creating multiple blades, the user can launch the swords from different angles to make avoiding or dodging the technique extremely difficult.
Cons: Much like the Lightning Horn, the user must sustain the technique and focus through hand gestures. Trying to use other jutsu will disable the jutsu.
Any questions?