Best to read the forum for tips, especially the one at the very top.
But as said, they are way too small, and one looks like someone else's work? It seems like it may be public domain. But if I can get it free, the buyer can too. And without a consistent style, it will be harder to peg you down as the artist when the styles are all different. At the very least if these are all pages from a book, mention that.
And you have a lot of spam words, like if its just a peacock, its not white, and not dancing and there is no sounds. Don't list it.
----Mike Savad