I can’t realy relate to the blank page effect that some people say they suffer as I don’t remember ever had this fealing. But we all start a creation from a blank page, I can relate as the start of somthing new.
I’m usually not a fan of the ‘film’ tonemapping option in Cycles, but you managed to make it work real well for this scene.
Yes, I can see that, you have made so many images already that you are struggling for entirely new ideas (or you have ideas, but you don’t feel like doing anything). More recently I’ve been getting a feel for just being completely useless and just not do anything at all (and that isn’t just related to doing art, but doing anything).
It’s a nice composition and I like the lighting. But in my opinion the shadows are too bright - and show too little detail (particulary the shadows of the pens). Photographs taken under such a light situation often show very dark shadows. BUT: Maybe I’m totally wrong and my monitor is adjusted too bright …