07-20-2018, 06:38 AM
First of all define the Frame with a ruler it will incredibly help you later on with my trick i am about to share with you.
Now the best is to start with a square that represent one side of the cube place it near a corner.
To determine if you did a perfect cube compare it agains the verticality or the horizontality of the nearest frame section.
Now you should have a perfect square use that square as if it was the frame to compare future next vertical and horizontal.
Don't forget to also use the horizon line to compare the horizontal segment of the square if it the nearest thing to compare it against.
Now the best is to start with a square that represent one side of the cube place it near a corner.
To determine if you did a perfect cube compare it agains the verticality or the horizontality of the nearest frame section.
Now you should have a perfect square use that square as if it was the frame to compare future next vertical and horizontal.
Don't forget to also use the horizon line to compare the horizontal segment of the square if it the nearest thing to compare it against.