Here's my tutorial on how to crochet mosaic tapestry using my charts which tell you exactly when to change colours.
Full explanation, chart, and written instructions can be found here https://www.gyho.co.uk/mosaictapestry...

From now on, any of my future mosaic tapestry patterns will use this technique/chart, starting with Botanica.

Check out my website for all patterns.
https://www.gyho.co.uk