I’ve never used a chart pattern before but I’ve seen a few different types. One has like the key and everything but this hello kitty pattern does not how do you read charts without any keys, abbreviations, or stitches? :shrug:
On a color chart, you work it in stockinette. Read the knit, right-side rows from right to left on the chart, changing colors as appropriate, and on the wrong-side purl rows, you work the chart from left to right.
Amy has video on intarsia which will help with changing the colors without leaving holes.