Click Image to see larger version in my gallery6 x 10 in - 15 x 27 cm. This looked way off while it was being pained. I went for a dark wash for the paper so I could make a feature of the reflection of the light down from the knife, but when it was being placed it looked way too dark. Well, it still is too dark.
I lost it a bit on the shape of the sharpener but over all the shapes work and it does read as a knife with reflections. But I also made the blade a bit over dark. It looks as if it was in shadow, which it can't be if it is also reflecting the light on to the paper.
Here is what I was seeing.