HI!, im German so hopefully my English is enough to discribe my problem.

I paintet a Greyscale Map in Photoshop with some landmasses and islands on it. after i finished, i added some simple mountains and hills. i thought that i could export it as a *.png file to import it in wilbur, to add/filter the desired high qually mountains with foothills and rivers. I tried some tutorials but i wasnt able to get the results i wanted.

Here is what i did in Photoshop
Weltkarte Heightmap.png

i wanted it to look more like

island_totale.jpg

i hope u can tell me what i did wrong