It is necessary to create eight (to start) 2D points of interest for an isometric map for a mobile game about Vikings.
Each image should be twice as wide as its height (references attached).
The setting of the game is historical, so points of interest should be without magic.
There should be no surfaces (land/sea) in the images - as we will overlay them on the map.
Images should be in PNG format with transparency. The edges should be sharp - either gray, or black, or without outlines, as long as they are not light (they immediately catch the eye on the map).
Image size - 300 pixels wide, 150 pixels (plus or minus) high.
List of points of interest:
1) an islet where a walrus or a couple of walruses sit (it will be in the sea when generating the map)
2) fishing spot for Herring - draw a school of fish, an example in the reference (it will be in the sea when generating the map)
3) fishing spot for Salmon - draw a school of fish (it will be in the sea when generating the map)
4) logging spot - draw a forest (it will be on land when generating the map)
5) spot for quarrying sharpening stone (it will be on land when generating the map)
6) spot for quarrying Steatite or "Fat Stone" (it will be on land when generating the map)
7) a small settlement of Norsemen (it will be on land when generating the map)
8) resource amber - produced by sperm whales, and then can be found on the shore - similar to a piece of gray or black waxy stone (it will be on the shore when generating the map)