Eternal Chaos says:
"No tongue, stupid webs on his body, gray spider instead white, small build, press on nails, small teeth. Need I go on?"The webs on the body went well actually. The reason being is that his costume was based off of Spidey's like in the comics. Well they changed what Spidey's costume looked like in the movie so it changed Venom's slightly. The small build? He wasn't that small as Venom. I mean he would have looked kind of wierd if they made him as big as he is in the comics sometimes. The teeth they got right. The tongue is the biggest thing.
General Sylux says:
"The carnage symbiote always was stronger than the venom symbiote."
I forget which comic it was in, but Spidey teamed up with Venom to catch Carnage. Spidey turned on the auditorium speakers and the symbiotes went "SKREEEEE!!!" And Venom said something about giving him more because the parent symbiote is always stronger and can take more punishment.