For me its important to know,if u can imagine and if u can express your imagination.
Let me tell u why your plane is only cute, but not impressive.
the shape is no aerosol-dynamic,the lines are 90 degree or 45 degrees to each other, boring, u see it every day.
That is why I build the B2, to show what is possible with 50x50 area.
the wing is aslope with a proposition of 2:3. every 3 blocks to the side i go 2 blocks back.
How did I found this out? use google picture search
load this picture into paint and see the size of my selections.
rest is math and training.
u need to learn how to do complex shape like this.
pls train a bit more on the openserver.
the next step would be design a complete new plane/spaceship from your imagination.
Which suppose to make sense, which looks like it can fly
If u really want to do cute planes, pls use more curve.
eclipse sphere what ever.
Your creation need to give the viewer a msg.