I just spent a couple of weekends drawing the church of Saint Eustache in the centre of Paris. I was impressed by this view with the differnet volumes and asymmetry. The photos below show a progression from pencil preparatory drawing on 6 sheets of A4 cartridge glued together, through to the finished pen drawing. I used a Unipin 0.5mm and I rubbed out the initial pencil lines afterwards. 

Here's the pencil draft showing some rectifications :

The following day I started going over it with the fineliner :

It was important to take photos at the start because the shadows changed a lot in the time I was there :
 

 

Here's a close-up. And no I'm not left-handed :)

Another close-up. Building up the ink drawing and some shading/cross-hatching :

The weather stayed dry thankfully :

This is where I got to on the end of the second day :
 

The third day :

And the fourth day :

Nearing completion :

A close-up :

Here I've rubbed out the pencil lines :

This man was asleep on the train when I came home frm work late one night. He didn't seem to mind me drawing him...

This watercolour sketch was interrupted by rain on two occasions but I came back and finished it off eventually. When I started drawing the scene, it was at low tide. By the time I began painting, the lighter was now afloat and had risen a couple of feet... Leigh marshes, Essex August 2014.

I was sitting watching a concert and I had my sketchbook and a fibre-tip on me....

Here's another sketch from a trip to Barcelona sitting in a bar on the Ramblas. The light was quite atmospheric in this interior view and I tried to capture it by simplifying the drawing into areas of flat tone.

This page from my sketchbook is filled with quick studies of passersby, whilst waiting in a café in Wandsworth Highstreet. People are what I find hardest to draw convincingly, so it helps to make notes whenever you find yourself with a few minutes to spare in a busy place.

A simple subject treated simply. This balcony projecting out into a narrow street in Toulon caught my attention...or rather the shadow caught my attention, because it is, in fact a drawing of the shadow.... I used a soft dark pencil.