Indeed yes... most modellers wait for about a year after practicing before they sell their models. The furniture would be good for RPG funiture. Oh and don't get mad dude if people are honest. I have been modeling for a year and I still don't sell my stuff yet. I could though. Here is a pic of some furniture that I modelled:
Now untill you can model something close to that I wouldn't sell. I am not bragging on myself for this model but yes I am saying that I could sell this if I wanted. Modelling is a hard thing to do sometimes. Keep practicing and don't worry your gun was only too thick and too cubed, other than that it was fine(sell able if textured good).
-Celsius Zero