You need to look a little more closely at reference. I know you said you don't want it looking like any particular breed, but without close reference, you're making similar mistakes to your first attempt. Right now there are quite a number of things that jump out. Head shape, lack of a chest-neck transition, forelegs look stiff/unjointed, hind legs are, well, completely off. The eyes really jump out at me. dogs, like humans, have their eyes set more on the front of their head than the side, whereas you've given it eyes that are set more like a lizard's (side of head). They're also really bright; creepy, almost.