Hi psychopappa!
It looks good for a start but I think you need to mess upp the shaders a bit... For me it looks like melted glass with a needle. The marble table looks good. Fot the scissors blades you need to paint a separate map to give the surface a mechanical sharpend surface... Use the same shader and perhaps use a noise node as bump with like 0.1 and 1 on the UV and assign it to the "sharp" blades. Fot the pinns I would consider a not so transparent setting... give it a bit more grayish/ blueish transp. and dirty up the specular surface with a bump map. you need to feel the volume not to see through it!
As I said, you have a great start so just play around with the shaders for a bit! For doing realistic stuff its all about chaos. btw. try a 3d texture for specular, it usually dose great things!
Hope it gave you an idea anyway!
/Chris
Beauty is worse than wine, it intoxicates both the holder and beholder - Immermann"