I'm not sure if I understand your question. So whenever you use an image element for an LMAC collage which is not yours, you need to provide the source. And from the source it needs to become clear that the image element (or gif or clipart or sticker....) is provides without any use restrictions. Meaning that it is also free for commercial use.
Now, for the updated version of your entry, you didn't provide the sources for the cliparts which you used. Therefore, according to the LMAC rules which are provided in all detail with each announcement post, your entry can't enter the competition.