OK, breathe. I have a Capricorn Moon and Scorpio Rising, with Mercury and Venus in Gemini. You can do this :). The Gemini Sun means you are intelligent and interested in a wide variety of topics. You like people, but since Gemini is the sign of the Twins, you may seem like two people in one. Or have two groups of friends who you engage with for totally different reasons. You learn fast and are basically friendly. But you do change a lot. We all do.
Capricorn Moon is a little harder. The Moon rules your emotions. Capricorn is a serious sign, and you won't waste time on emotional issues which don't seem important to you. Also, you won't waste time on people who you think aren't worth your time. Capricorn rules time. But you do want security, and are ambitious. Or at least ambitious enough to work towards getting what it is that helps you feel secure. You are very emotional, although you may read that Capricorn Moon people are cold. That's untrue. They don't like to show emotions in public, they are private people who are very emotional, and sensual, too.
The Rising sign is the facade we all wear with people we don't know well. Sometimes we wear it more. So, you appear to be uninterested or reserved, and people don't realize you are just trying to know them a bit better to decide if you like them or not. Some find Scorpio rising people intimidating. I find other women are intimidated by me. I'm a 5'2" blonde and I cant figure out why, although I am intelligent and Scorpio vibes are intense. You don't wear your emotions on your sleeve, which is double since you have the Capricorn Moon, too. But you are a bubbling cauldron of emotion when Scorpio is around! You are a loyal friend and have both a strong presence and are a strong person.
So the Gemini Sun actually lightens up your personality a little bit. It's safer and better to know more about people and situations before you get too involved. I hope that helps you. I have articles on Exemplore.com about Capricorn Moon Emotions and Gemini Sun sign People. I think I have one on Hubpages.com about Rising signs. You'll be fine! Take care, Jean