Please advise me

It's just paper. White glue or tacky glue should hold it down, and it should take paint easily.

Thank you, yes its just paper, and thats why I thought I could have issues when it gets wet, any comments welcome especially if you have experience with this material, I look forward to hearing your results!

I've never worked with this stuff... but do a test sample. Paint a few pieces and glue them to a piece of scrap wood.

I would definitely do a test sample first and apply the paint in thin coats.

Great idea for pavers/stones. Those are going to look great.

Someone used these the other day.

http://www.greenleafdollhouses.com/forum/index.php?app=gallery&image=78378

Doesn't look like she's painted them yet though.

http://www.greenleafdollhouses.com/forum/index.php?app=gallery&image=78376

but I would think they would paint the same as egg cartons. Which I know people have used paint and washes on those. But a sample would still be best, to get the right color combo you want.

This is going to look wonderful on this house, can't wait to see it!

What would everyone think they should be sealed or finished with?

Those are my pics bluebear linked above, and my inspiration is actually from Cynthia's (cjme63) Beacon Hill. Like her, I cut blocks and glued them close together using Modge Podge so I wouldn't need mortar. I also liked the look of the raw paper, and have simply Modge Podged them to seal them. You can get a better idea of what they should look like from Cynthia's album.

Its kind of amazing, because it was Cynthia's Beacon Hill work that inpired me [ more like totally knocked me off my feet ] and caused me to join Greenleaf and begin my miniature adventure all together!