How can I rate your skills via the internet? This will not be the truth. However, I can guess that you feel a lack of kitchen equipment. Maybe you should have a look at Black+Decker toaster oven convective heat transfer because it will improve every person's skills.
Nice work :) very dark but well done (the structure and symetry and the choose of the texture and colours) Maybe if you put on some white colour illumination it will make a little difference It is my opinion