[oXygen-user] customizing for pdf output

I have been trying to follow the Oxygen guide on inserting a company logo onto the title page for the pdf ouput. I have read the online instructions and have searched your forum. I have checked and double checked that I made the modifications as per instructions. I have modified many pieces of code and have matched what works for other people. Sadly, I have yet to be successful at inserting anything, image or text, onto the title page. I made one attempt a header/footer customization but that did not change the output either. Please help.