Telling from your display pic, you look really feminine to me. If you don't look masculine, it may be because you sound masculine. What I did to get my voice to sound feminine is this:
1. Start humming.
2. Put your finger on your throat.
3. Start going up in pitch with your humming. At the point in which you feel the most vibration in your throat, bring your hum into a talk.
4. You should end up with a feminine voice that doesn't sound fake or forced.
It may take a bit of tweaking before you get it 100%. Also, I think it's really insulting that they said your presence in the washroom is a "safety issue". The "safety issue" does not exist. The REAL safety issue is with how other people will treat you. Perhaps you should show them the Chrissy Lee Polis video, and show them the true safety issue that is involved with washrooms.