A genderqueer identified person may feel a combination of genders, or a fluctuating gender. It is also possible that they may feel no gender at times, or more masculine or feminine. Their presentation may be a mix of masculine and feminine, or they may present entirely as one aspect. They also may label themselves as 'genderfucked'.
Pronouns can be tricky, as different people may ascribe to different pronouns. If a GQ person corrects you on their pronoun use, please use and continue to use their preferred pronouns. A neutral question to ask is "What pronouns do you prefer?" if you're unsure, or do not remember if you have met them previously.