Thanks for applying at Muda!
Those pages are actually really good for a first try.
The only problem is the grays. Like you said, they are still too noisy. Do you have Topaz Denoise (version 3) and Topaz Clean (version 3)? You will need both those photoshop plug-ins for cleaning. Specifically, you will need them to make the grays pretty.
Read through the tutorials about cleaning
here (if you haven't already), then try cleaning those pages again.
Good luck!