Sometimes things just need to be a little grittier. Is the tavern really that clean? Does the abandoned cellar really look that spotless? A quick comparison above of "without" the added dirt on the left, with the assets on the right. Assets are sized 'small' and 'large' to fit a variety of spaces when combined with the scale slider.
Here is a collection of 30+ semi-transparent overlays that you can drop into your maps as well as some different shapes of colorable blobs (30+) which appear red below to make them colorable in DD that can be used as blood, snow, puddles, etc. There are also some remnant sewage-esq blobs thrown in for good measure.
