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.
tutorial] Mosaic Knitting - knotions
Mosaic Knitting Tutorial, How to Mosaic Knit 1x1 & 2x2
tutorial] Mosaic Knitting - knotions
Confident Knitting: Mosaic Knitting
Mosaic Knitting
Mone's Designs - monemades Webseite!
Dots Dabbles Designs - modern knitwear with a twist
tutorial] Mosaic Crochet Chart, How to Read - knotions
Mosaic Knitting, How to Mosaic Knit & Pattern Modifications
Ch. 1 Beginning Mosaic Knitting
Mosaic Knitting - The Ultimate tutorial [+tips & tricks]
The Art of Mosaic Knitting - Knitfarious
tutorial] Mosaic Knitting - knotions