Is this your own interpretation of Luke's helmet, or based on one of the rarely seen variation? If you're going for accurate, you need to put in quite a bit more grey line detail (around the red cheek boxes and encircling the red and yellow V's section), you need the black line detail at the bottom of the mohawk sides, you need the black detail lines either side of the red stripe down the centre of the mohawk, the red rebel phoenix insignias need black outlines and your Mohawk end cap should be white and yellow (with thin black lines either side of the yellow lines) instead of black and yellow.