Alright Dionesiist, I'm going to explain this to you as simple and polite as I can.
FIRST, brfore you even think about submiting the resource, for any and every peice of your submition you didn't make on your own, you MUST PM(Privet Message) the creater for approval.
If even one of the authors says no, then eather don't submit it or make your own part. (don't you dare say you only have MS Paint, because I've seen some amazing things made with it. Yes, even skins.)
Second, when you submit your model, you MUST credit the creaters of the said parts. All of them. This is to be done in your submition discription and/or the first commet on the item.
Last but not least, I hope you have a good life while being banned from wc3sear.ch.