Aries on the inside, Capricorn on the way in.
Your sun in Aries (fire, cardinal) is the engine — what burns at the centre, what starts when you are at home in yourself. Your Capricorn rising (earth, cardinal, ruled by Saturn) is the door — the way you arrive in a room, the first read the world takes of you, the body you walk in.
Strangers tend to assume you are steady and grounded — that is the Capricorn arriving first. Then they get to know you and discover the Aries fire underneath, which can be a layered second read — they have to update their first impression.
Reads as Capricorn until you trust them; then Aries comes through. The cardinal-cardinal mix means you consistently starts.