Don't use more than one color at a time! Mosaic Knitting looks more complex, but it's done by just using one color in a row and slipping stitches.
How To Do Basic Mosaic Knitting – Video and Photo Tutorial
Mosaic Knitting, How to Mosaic Knit & Pattern Modifications
tutorial] Mosaic Knitting Chart, How to Read - knotions
Confident Knitting: Mosaic Knitting
Mosaic Knitting
tutorial] Mosaic Knitting - knotions
tutorial] Mosaic Knitting - knotions
How to Do Basic Mosaic Knitting – Easy Brick Mosaic Pattern
Confident Knitting: Mosaic Knitting