Very good, the same effect can be achieved through manipulating the air already around you, by causing it to circulate around you using some chakra control.
(Fūton: Fūsajin no Jutsu) - Wind Release: Dust Wind Technique
Type: Defence
Rank: D
Range: Short
Chakra Cost: 10
Damage Points: N/A
Description: The user creates a gust of wind that layers an area in loose sand and dust. Doing so also acts as a sandblaster on the surrounding area. This layer of sand that accumulates on the trees during this technique makes it difficult for others to get a good footing. The initial gust can also temporarily blind opponents by lodging sand in their eyes
Now hold your hands out in front of you and charge them with your wind chakra. When you are ready I want you to release your chakra and start manipulating it to cause the wind to form a dense wall that should deflect my shuriken that I will now throw at you.
*Throws a shuriken at you.*
Then make more futon chakra to somehow make the already exsisting wind more defensive so it can block more shurikens
By 'somehow' I think you mean that you manipulate the wind currents with your chakra to create an area of swirling currents in front of you to deflect the kunai. Right?
(Fūton: Sensougouheki) - Wind Release: Rumbling wind wall
Rank: D
Type: Attack/Defence
Range: Short
Chakra Cost: 10
Damage Points: 20
Description: User creates a wall of spinning wind in front of him that is used to push back weapons thrown towards him. It can also be used against taijutsu close range attacks, but the wall can be pushed back with a stronger wind jutsu or if a smoke bomb or explosive tag touches the spinning wind they will automatically get activated because of the sharpness of the wind element, damaging the user also.
Now inhale a breathe of air and mix it with your wind chakra. Then exhale a stream of wind at the ground in front of you to kick up a lot of dust, bowing it up around you to conceal your movements as you try to hide.