Spring RTS Engine

As others have mentioned, be best to make the terrain less rounded, metal has sharp edges, not round corners. (generally)

A typical command line entry to make a metal map that I use would be:
wine MapConv.exe -i -c 0.1 -n -109 -x 146 -t bigmetal.bmp -m metalmap.bmp -a platformheight.bmp -o platformriver.smf

Its the lack of the -l bit that sharpens the edges, so make sure there is no -l.

Either your graphic card don't support shading, either you forgot to edit your .smd. Yeah, my CPIA .smd and skybox would fit this map well. It just need a custom water surface texture and detailtex.

does indeed not support shading, and everyone is free to modify the .smd to his/her likings and upload it. Unfortunately my very nifty graphics card does not support skyboxes aswell....maps should come with an option to NOT install them....or have an integrated option in springsettings to turn that option off.