Wait, absorb, shoot
In my continuous quest for #learning #photography one of the key things I have found is once you've decided on a subject. Check it out from some different angles. Do some test shots. Wait and see what else happens. Don't be too quick to move on.
In this case the Melbourne Star Observation Wheel was putting on a grand light show early in the evening. Enough light in the sky to give a clean background and still be able to see all the colours of the wheel.