I'd probably say work a bit more on your backgrounds, you can clearly see what it's sat on so perhaps think about what's going on in the backgrounds. If you look at the more successful shots the background is usually considered in quite a bit of detail. The lighting on the shot seems alright, but concentrate on the background first that should change the nature of your shots pretty durastically. Also remove the time/date stamp it makes the image look really amateur-ish it's a pretty simple step to do as well which should be somewhere in the camera settings.