Henry

here is my first HW
I have some problem that im not really sure how to make the lines with green color.
But I really learn that how this thing work basicly.
and i dont thing this will be too hard.
just hope there will have a easiler way to make sure which coordinates i should use when i creating something. so far that is not too hard, but take alot times to make the things that the way i want it to be.