I'll post a picture of my VFT tomorrow, in daylight.
Feeding wise, I give it anything that moves. Ants, half-alive blue bottles, small spiders. Just don't go stupid by giving it bits of mincemeat or beefburgers.
You have to remember how the trap works, in order to understand why it's important what you feed the VFT.
Each trap has 6 very fine sensors, 3 on each leaf. They are like small hairs. Whenever it feels constant movement on these hairs, it's time for the trap to close. If the movement stops when it's closed, the trap will re-open the next day. If the movement continues, when the trap has closed, it'll simply keep tightening on the victim.
There is a technique to getting wriggly creatures in the traps, which I have sucessfully used. Insert the victim in a container, place the container in the freezer. Leave the victim in the freezer for the shortest time possible (ie: 30 seconds to 2 minutes), enough so it's barely moving. Then transport the victim to the trap, and it'll start moving in the warm air again. The VFT should pick up this movement, and capture the animal.