OK to start off you need to make a black screen

It does not matter the size.
next you need to add a white line

It does not matter the angle as long as it goes relitivly close to the center
Then you use black again and go along the edges to make it thiner and less stright

Now the rest is the parts that are seen.
What you do is you doublicate two more frames.
The first one you remove 1/2-1/3 of the line

On the middle one you leave it alone, and the last one you repeat the first but you do this on the opposite side

When youre done it should look like this


It does not matter the size.
next you need to add a white line

It does not matter the angle as long as it goes relitivly close to the center
Then you use black again and go along the edges to make it thiner and less stright

Now the rest is the parts that are seen.
What you do is you doublicate two more frames.
The first one you remove 1/2-1/3 of the line

On the middle one you leave it alone, and the last one you repeat the first but you do this on the opposite side

When youre done it should look like this

