You're just bored aren't you? hahaha
I play around at home with my cam too.
I did some "domestic bo liao shots" at home too and realised that lighting is a big factor.
Try opening ur curtains for sunlight and even your roomlight during board daylight (for experiment) over the lighting. If you have desk lamp, you can play around with it. That should make your pic less flat.
Maybe you're doing a DOF experimentation of ur pns cam. My first observation is that I don't really see a properly focus point in the pic. Meaning, it feels that the pic is a little out-of-focus (OOF). However, it could be the limitation of the pns cam.
And as you can see, I'm quite bo liao to type such a long reply. -_-