#3 is nice , only the "sheet" curves the other way in the English wheel ! and you dont "have" to make the c-shape symmetrical(double) , but i liked it :)
#11 was nice. can u try one like just with the "wheel" in old machine green , like in the picture i sent?? and do u think it would look good with more "elegant" text?? The screws looked nice,, thanks
#16 can u try with black text and darker inside the oval, and make the sheet silver instead of red, keep the rivet but remove the "star" pattern, thank you!