Firstly, theres is no way that that wooden stick could hold the weight of a rocket that large, it would definately snap, if it didn't go up in flames first, make the stick larger and/or metal.
Secondally, that small amount of tape or that small a clamp would not be able to secure the rocket properly, make it go nearly around the full length of the rocket, preferbally mutiple times if it's secured with tape.
Thridly, increase the length and width of the fuse and/or have it tied to the support block, that way it will be more notiicable.
Fourthly, and this is just me, judging form the sharpness of the nose cone, and the posistion it in as it is. I think it would be more dangerous if the rocket was impaled through the block and the nose cone was the "business end".
Its just a it is, the beam is getting in the way of the rocket, so the support beam will the thing that contacts with the target, making the rocket useless, and lets be honest, compared to the axtinguisher or homewrecker, the beam looks barely lethal.
Just my 2 cents.