These are from my Trees of Life colouring book being published by Dover Publications.
These pages feature my interpretation of an Egyptian styled tree of life, with scarabs, lotus flowers, scrolls and those awesome Egyptian wings! This would look great coloured up in carnelian or scarlet reds, turquoise and malachite shades of green with lots of gold accents.
The second image is a Celtic tree, a glorious oak with woven branches and lots of leaves and acorns to colour. The Islamic styled tree on the right is a complex design filled with vine-like twists and curls. This design would look especially nice with subtle shading I think!