Exercise - Visual depth

All my life I have been avoiding the theories of perspective. The text explains it better than I have seen before but it's still something I struggle with, I prefer to cheat and draw what I see which is not a suitable attitude for a degree student so here goes.
First one point perspective. How big a page would I need to draw in my vanishing point?

I've widened the angle between the wall that has the fireplace and the door to the understairs cupboard but I promise that I did the right hand wall properly with pencil lines to get the angles right I just didn't look closely enough at the door.
Two point perspective is harder. I started with pen and ink and got in a complete muddle so I went back to pencil for guidelines and drew in ink over the top.

The angles for the window aren't quite right but it's sort of there.
Three point perspective is a nightmare. I can understand it for tower blocks but I find it difficult to see indoors.

This is my first attempt, the window is just a wobbly mess, take two....

After I finished it I realised that the top of the fridge should be smaller (further away) than the bottom (close) I looked around for something that I could exaggerate and ended up sitting at the bottom of the stairs looking up.

I confess I couldn't work out where to start with horizon lines and vanishing points so I went back to my old ways and just drew what I saw. I really enjoyed drawing this, I think that it shows, I loved the challenge of fitting all the bits together. The light at the top does look a bit odd though...
Next Isometric perspective. Surprisingly I found this quite easy to lay out, I thought that it would be much more complicated to arrange. It makes my room look quite big!

I looked online for inspiration for a picture with "its own visual logic" but had no success. I wondered about making more interesting items bigger or laying them out in an order of use in some list of activities but in the end I decided to draw them in the order that they caught my eye and cram everything randomly on the same page.

Freed from looking for perspective lines I drew all the clutter of my studio/office/dining room including the animals, hard at work on a Sunday afternoon. The perspective is reversed with the smaller items at the front left corner and the bigger things at the back but it looks quite flat probably because you expect bigger things to be at the front.
I think that it needs colour or shading to make it work better.

Experiments with Photoshop led to watercolour on the original.

I spilt water on my dog's head and although it's watercolour paper it didn't really like the wetness of the wash but I think that it's given the drawing a bit more depth and it guides the viewer around the picture a bit more. I used a touch of Permanent Rose to make the viewer look at the flowers and the clutter on the desk.
The flat drawing was strange to do. If you don't have any depth at all you have  very little information to describe the object so the bird-cage is just a mesh box. I added some details to make it more interesting.

The drawing looks very childlike. Partly that's my wobbly lines but even if I'd drawn it with a ruler or on a computer the lack of depth suggests a naivety to me.

Reflection

Perfect perspective is hyper-realism, it’s more perfect than the real world. It says take me seriously I know what I’m doing, but it can be a bit sterile, too good to be true. If something is slightly out of line (such as the door in my first drawing) it will look odd. This could be used to draw attention to an aspect of the drawing.
Isometric perspective is a diagram, this is how it should be, assemble this way. It’s good for instructions or to explain something visually but it can look as though it was designed for a computer game, it’s not quite real. In the wrong situation it could look ridiculous, as though the illustrator doesn’t understand how the real world looks.
A flat drawing can look childlike or like an entry in a catalogue. It’s a diagram or a list of items which might not relate to each other
No perspective looks chaotic but it’s softer than a flat drawing. It can be utilised to alter the hierarchy of the elements in the image so that something small and insignificant can be made more prominent. Used for a list of items it would look more interesting and subtle than a flat drawing.
(I need to practice proper perspective drawing...)