Rocket for 18mm engines

Boost MeBoost me to motivate me to design and release other perfect rockets and prints; just like this one! I am a teen and it would mean a lot to me and help me stay in this stuff!

 ***Nose cone is loose for a reason! Use tape for perfect fit for ejection charge****

This rocket was designed by me with no others inputs, and I have launched it over a dozen times. It has reached a couple thousand feet high, (at least my guess, no gps data) and when it falls, it does a slow bellyflop so there is no need for a parachute, only a stringer for visibility. I have launched with A, B, and C motors, though I think the B6-4 motor is best because C class goes so high it is hard to recover without a massive launch range.