Straight Lines and their Shapes

Straight Lines and their Shapes - student project

So, I really struggled with the vertical lines. You can see in the first picture that I tried to get in as many vertical lines as possible, but they are all pretty wobbly. Naturally, I would just rotate the paper. Or do you have any tips?

Straight Lines and their Shapes - image 1 - student projectStraight Lines and their Shapes - image 2 - student projectStraight Lines and their Shapes - image 3 - student projectStraight Lines and their Shapes - image 4 - student projectStraight Lines and their Shapes - image 5 - student project