@brushinobi You have created your Art War topic, which is great. Everything you'll make will go into that one topic. Use the 'Reply' button in your topic to add a reply with your first sketch. Then another reply with another progress image and so on. When you will have the Concept sheet and Final illustration, you will post it as another reply and then press the 'Submit Entry' button.
So, your final images will be at the bottom of your Art War topic.
As for the logo, it's up to you! If you like it in your piece, you can use it, if you don't like it then you don't have to
PS: haha, thanks for the heads up!