Junior, Junior, Junior...
The observed phases of Venus only mean that Venus and the sun exhibit relative motion. They certainly don't prove heliocentricity.
Beep. Circle takes the square. The phases of Venus only make sense if Venus is orbiting the Sun closer in than the Earth. Planets orbiting the Sun farther out than the orbit of the Earth will not exhibit phases, as we can only ever see the face pointed toward the Sun.
I must admit it is strange having to explain this to you. It's almost like talking to someone from the Middle Ages.
"Throw his ass out!
He's a Crevo! He's a Crevo!
He's a Crevo! A Crevo!
Look, there's a Crevo!"