First of all, let me tell you how refreshing and wonderful it is to hear of a 12-year old still building models! Most 12-year olds I know have permanently-bowed necks from looking down at their stupid cell phones 14 hours a day, and are about as productive at anything even resembling a "hobby" as .... well, anyway...great to see that you have found modeling, and that you're here interacting with people who share the same love!
It looks like you also have a future in it! It looks great--I can't believe you didnt have an airbrush when you did this! That's some impressive work! Keep up the good work, and post your next project soon!