Illusion knitting is not hard. Just pay close attention to whether you should knit or purl - normal stuff no matter what pattern stitch you are knitting, right? You'll alternate colors, 2 rows for each color. Just as the first 4 rows of the chart are charted, those are the 4 rows you'll need to repeat for any parts of the scarf you want as just stripes, no skull.
Not sure how you can incorporate the pattern onto gauntlets as it's probably too wide/big for the stitch count across the back of a hand. It could probably fit onto a hat, though.
Maybe you can find another skull chart small enough to fit on the back of a gauntlet.
Take a look at these socks - notice the chart is standard looking, but read the directions - you complete 4 rows (2 each color) for each row on the chart. Follow this logic and you can turn any smaller skull chart into illusion for your gauntlets.