Don't be discouraged. It is not easy! Trying to simplify away from the obviously complex shapes is tough. These are some helpful things: 1. The single most helpful thing with proportion and angle was to first do a quick sketch to see if I understood at least the big idea, and overall shape. 2. Then do the gesture and/or envelope around the thing. Remember the portrait layins: big to small shapes. A big envelope or set of envelopes can be really helpful in narrowing down the options. I have a really hard time when I skip this part. I end up getting lost in contours and small shapes and everything is out of proportion and out of relation. 3. when using reference, it's easy to look once or twice and then try to draw from memory. In my experience, our memory is a liar.It takes a lot of experience to do this, if you don't have one of those magical photographic memories that is already connected to your drawing arm. Instead, while thinking BIG, MEDIUM, SMALL, what is the information on those scales that I need to transfer. Spend MOST of your time looking at the reference/model/subject(s), (eventually after lots of practice) even while we draw, so we tell the truth more often. Does that make any sense?

I cannot find the vanishing point. Mark it on the page. you need to trace straight lines from the VP to your boxes