I especially like this design, other than the ID label and #teammalaysia swap places, I would suggest changing the teal color on inner collar and the front part upvote arrow to 'blue' or 'red', the same color tone as the Malaysian flag. I think blue and red would look bolder and striking, and at the same time take out the faint impression of Petronas' shirt. It can also be coordinated like blue to male and red to female design. The ID label can either change to one of the color shades of the upvote arrow of either white or silver grey. The teal colored tag on the left sleeve be taken out.
Just an added suggestion other than the already awesome design. Wouldn't mind not changing it at all too!