Even if you stand Goro up straight, he's going to be shorter than Kung Lao. It's your first photoshop fake, so I'm not going to be big about it, but you have to keep in mind that mixing sprites from different games is risky business, because there's always such an improvement in the newer games.
More than that, Great Kung Lao didn't look exactly like modern day Kung Lao, so next time try to make him look less like Kung Lao and more like his own character.
It's been said before, the arm looks like it's exploding in blood, not like it's just been sliced off. Moreover, the arm is too far away from the body, by the time it's that far away, the after-image of Kung Lao's hat should be fading away around Goro's waist, not his knees.
Finally, the shadows should be at an angle to the right, instead of directly down. Look at the light hitting from the back left, if you do that the shadows fall directly into place.
7/10.
Good work anyways, but its not your first for sure....
