Probably got them from Spriter's Resource.
Anyways, they're okay, except the iPods don't actually look like iPods. iPods are rectangular, not square, and the screen is significantly smaller than the rest of the body, where the circular click wheel is located. Also, the earphones should actually connect to their ears instead of worn like a necklace.
Avoid using sprites from multiple generations in sprite maps (don't put 3rd gen sprites in a 2nd gen maps and don't put 4th gen sprites in 3rd gen maps). It just seems out of place and awkward.
You also misspelled Siamese