steps you need to take:
1. find a therapist, preferably someone with experience with TG or someone with a Ph. D. credential
2. Map out your transition with goals and dates
3. pick a traditional feminine name and plan to petition your local courts for a legal change of name. a letter from your therapist regarding your intentions for your name change will greatly help the courts see you're not doing so to defraud creditors or the law (police).
4. after a legal change of name, seek to have your HS transcripts, SAT's etc, reflect your new legal name
I would consider that to be first and foremost since it is your name that professors, administrators, etc will see first......if the name (masculine) doesnt fit with what they see in you, they will know.
after that, consult with your family doc and find an endocrinologist to commence estrogen and anti-androgens........after that, it primarily depends on you (mannerisms, appearance, dress style, etc)
hope this helps