An ice cave made by me during the C3. Note that it does not include a palette, as I think it looks much better with those of SMW Original, but if you want to create a palette for it yourself, feel free to! ^^
Screenshots:
Do not overwrite the first three Foreground Map16 pages (0x00, 0x01, 0x02). It should be fine otherwise, so just move it over to 0x03 or higher and it's good to go.