Watercolour is a difficult medium to master, and even experienced artists are prone to making mistakes.

Over the years he has spent working as a professional artist and demonstrator, Charles Evans has built up a huge bank of expert advice, tricks, tips and techniques for fixing common watercolour problems, correcting mistakes, and learning how to avoid them in the first place.

These problems include how to remove cauliflowers', avoiding or fixing water spillages, preventing colours from bleeding into one another, making distant hills look, well, distant, and making less muddy colour mixes.

Each problem is one that Charles is commonly asked to solve, (such as My trees look like lollipops), followed by Charles' solution, and a short demonstration of how to prevent the problem occurring next time you paint.