Great...
Kakashi reaches his hand out toward the ground and uses shape manipulation with his nature manipulation to make a long stick of earth come to his hand. At the end of the stick is a diamond shapped point. Kakashi then throws the spear at <insert your bio's name> chest
Alright with your earlier analyzation this should be sufficient. Next technique.
(Doton: Shinju Zanshu no Jutsu) - Earth Release: Double Suicide Decapitation Technique
Rank: D
Type: Supplementary
Range: Short
Chakra Cost: 10
Damage Points: N/A
Description: The user, emerging from the ground below the target area, pulls down the opponent so that only their head is above ground. Unable to move, the opponent can easily be decapitated or tortured.
Note: user must already be underground through the use of (Doton: Moguragakure no Jutsu) – Earth Release: Hiding like a mole technique
With this technique you usually have had to use the C rank Hiding like a mole jutsu, but since you have not reached that point in your training yet we shall start from you already being underground. With my clone above you, focus your doton chakra into the earth around you and manipulate it so it parts as you reach up and grab my clones ankles. You should then manipulate the earth once again to allow you to quickly yank my clone downwards the moment you grab him, effectively trapping him from the neck down in solid rock. If caught this would leave the victim quite vulnerable and you can finish them off at your leisure.
Though this is quite difficult to pull off unless you have the element of surprise.