Great start! Try taking the pictures towards the front of the white board so you don't get the seams of the light box in the picture. Also, they seem a bit bright so if you are going to use the flah, maybe use less light over the gecko. If you're going to use light, try and practice without the flash. It's really hard if you don't have Image Stablizing on the lens. So it may be easier for you to get a little tri-pod to put the camera on. Good Luck! Nice Gecko!
Nice pictures but try and practice without flash so you see the real colors of the gecko. Here's a pic I made with my starter light box today. It was taken in natural sunlight. Tell me what you think.