I drew the 1p perspective forms freehand. The 2p and 3p and assignment #4 I used a pencil to draw in vanishing point lines. Then drew over it with a pen. I have some experience with perspective in art and wanted to do some slightly complicated stuff that would be difficult (for me) to do freehand. Also I'm practicing value/cross hatching - line weight - with ink and just added that on these shapes.
On the 1p and 2point perspective I wanted the support of the vanishing point lines. There are more of these I made without the supporting lines on pages not shown here. I'm able to do it but after looking at them I didn't like the repetitiveness of my ovals and depending on the direction they lost the appearnce of "space".
I'll be going for some sort of humming bird/dragon fly/triceratops thing. I ended up making a new thumb nail to suite the features better, but did keep the wings of one of the thumbs (in design). Pureref is also a pretty good free tool for this kind of thing if anyone was looking for one (Ctrl + n for notes).