--- a/PresetMaps.wiki	Sat Dec 01 01:04:39 2018 +0000
+++ b/PresetMaps.wiki	Sat Dec 01 01:07:50 2018 +0000
@@ -68,9 +68,9 @@
   * As of 0.9.19+, map.png is optional if a mask.png is provided.  If there is no map.png, the theme will be used to decorate the map.  No objects will be added to white areas.  Use black if you want objects.
 
 ==== `preview.png` ====
-Preview image of the map, usually a smaller version of `map.png`. Normally, you can just downscale `map.png` to get your preview.
+Preview image of the map to show how the map would actually look like in the game, minus the background. Usually this is just a smaller version of `map.png`, so in most cases you can just downscale `map.png` to get your preview.
 
-This should really just be a preview, and nothing else. No logos, text or other distractions that don't exist on the map. The theme background should be not added as well.
+This should really just be a preview, and nothing else. No logos, text, theme background or other distractions that don't exist on the map.
 
   * Size: 256 × 128