I always use Artists' Watercolours for painting my papers, and permanent white gouache when I need to create an opaque colour, but please ensure that water colour paintings of any kind are never hung in a strong light. I stick my papers, using heavy-duty wallpaper paste, to '6 sheet' acid-free mounting board 'balanced' with brown wrapping paper. So far and I have been using this system for more than 30 years it has never given me problems. I always seal my pictures against dust and insects by mounting them, backing them with hardbard, and framing them behind glass.

One of the qualities of my pictures apart from being that of an extremely elaborate watercolour, is their texture and sense of depth coming from the build up of papers, from the large first sheets blocking in the composition, to smaller pieces outlining the form to the tiniest pieces showing detail; the result of my technique and materials used.