Am I , a minor, able to present my own documents to court?

No.  If you are a minor, then you must have a parent, parents or guardian to represent you in court.  However, the parent who has custody of you can arrange for you to testify before the court as to your desires for custody.  Not all courts will permit the minor to testify but are required under California law to have the wishes of a child over 14 heard by the court.  If not testifying in court, then the court would order the minor child to meet with a child evaluator who would hear the child's wishes, and then present the child's wishes to the judge in court.  Of course, the parent or guardian can likewise advise the Court of the child's wishes.