Stick with it, your skills will only improve yet I see no or very few flaws with the helicopter.
Later on girls, cars ect may have you hang up the models for a few years. (most here did the same)
You have a head start on becoming a master modeler after the teenage distractions. Keep your models & supplies, you will be glad you did one day. A few modeled through their teens, maybe you will be one of them.
Regardless thanks for posting your work!
I think the other will agree its inspirational for us all.
Jason