Smart Traffic Sign pictures - / Clean work but try to match the green colour in the original sign. Also, look for larger source images so that your working environment isn't so restricted. / sorry for the size, but O could not resist this one... It was just for fun... / looking good. (I think there's a need for a sign like this) haha
Monster Smart Car pictures - / the idea is good...but there details that you should be aware of...like shadows, depth, cropping, removing parts (there are some small gray that is visible near the wheel) and the car is need to be transformed..if it is only one wheel there should not be two curves on both side but one curve in the middle.