As a minority female, I entered the technical world doing switch maintenance, trouble shooting and repair, building frames and providing tier 3 software support at a time was all male.
There were challenges along the way as introducing females into the technical workforce was new. However, I studied, kept notes, observed, learned all that I could and worked hard at everything I did. I built relations and trust along the way. It was gratifying when the veteran techs appreciated work that was done and resolving issues they could not. There is also something to be said about self satisfaction. I never viewed myself as a female minority or used it as a crutch or excuse; just as a person who does their job well, takes pride in what they do and strives to make things better than they can be.
So, put aside your appearance and think about yourself as an individual who is passionate in going into the technical field. Make the time and extra effort to educate yourself in your field of interest and extending further. Excel. Teach others. Connect with those that you normally may not. You can learn a great deal form those that you tend to stray away from. Also, consider how you communicate verbally and written to others and what you can do to be effective. Good luck to you!