I'm quite ignorant about fashion and I'm colourblind so it's all a tad tricky. My only knowledge of that world comes through Christopher Bailey whom I first met in 2008 when I did a campaign for Burberry that featured musicians artists actors and sportsmen.
Depend upon yourself. Make your judgement trustworthy by trusting it. You can develop good judgement as you do the muscles of your body - by judicious daily exercise. To be known as a man of sound judgement will be much in your favor.