I realise now that this picture of the corner of our house drawn with watercolour pencils should have been a line drawing… On reflection it seems a bit daft to have gone to the trouble of ‘colouring it in’ before double checking that the perspective was correct as this was the point of the exercise.
I knew when I had finished the picture that it wasn’t quite right around the windows on the side elevation… but I had mark up the receding lines (see below) before I could establish exactly what the problem was
On drawing the house I had simply lined up the two windows at the same angles above and below each other and now I realise that each of the windows have their own unique angles and vanishing point. This has been a really useful exercise as I had not fully understood the concept eye level and vanishing point before.
I’m reasonably pleased with how the front elevation of the house has turned out, which I thought would be the more difficult aspect. It seems that the more subtle angles are most likely to trip me up!