This is something I had trouble with at first. I found a few ones I liked and now I use them for almost all my maps.

This is one of CoyoteMax's textures, one that I like very much: https://www.cartographersguild.com/a...1&d=1461562742
Another from CoyoteMax: http://coyotemax.deviantart.com/art/...es-4-144972405
His textures are for free use by the way!


Here is one I made myself: https://www.cartographersguild.com/a...6&d=1468250375

I made it by crumpling the piece of paper up and soaking it in strong tea. After that I let it dry and scanned it in. Then I edited a bit to darken it and get it to the a good colour.

Here's a mini tutorial I made to add stains in photoshop to paper: https://www.cartographersguild.com/a...4&d=1468250177