1. Download and install BizHawk (a multi-platform emulator, including emulation for the Sega Genesis).
2. Download the "Bugs Bunny's Double Trouble" Genesis ROM (try searching for "Vimm's Emulation Lair" and then go to "Vault", "Genesis", "B". Feel free to edit this step if giving directions to find ROMs is against the TOS, mods).
3. Load the ROM in BizHawk and start the game.
4. Click "GEN" in the taskbar and then "Settings".
5. Click on "Sprite Layer" to turn it to "False" and hit OK (this will turn off character sprites so they don't clutter up your map, you can always turn them back on if/when you do need to see them).
6. Press F12, which should take a screenshot.
7. Play the game a bit more by moving over a bit.
8. Repeat steps 6 and 7 until you have screenshots of the whole area.
9. Open up an image editing program - if you have Windows, you can even just use Paint.
10. Go to "File" and then "Open", and navigate to the folder where the screenshots are, which by default should be "[wherever you installed it]/Genesis/Screenshots".
11. Select one of the screenshots.
12. Copy it (with Ctrl+C).
13. Open another screenshot.
14. Paste (with Ctrl+V) your screenshot into this image and position it to where it should be.
15. Save the file.
16. Repeat steps 13 to 15 until the area is assembled.
17. Do more image editing if you need to add labels, certain sprites, etc.
18. You're done!
If you ask others nicely maybe they can help you with any of these steps above, or provide alternate ones, if you want to learn how to make maps, as from what I've gathered from reading about you here, the best chance of seeing any maps of Looney Tunes games is to make them yourself, and if you didn't know the basics, now you do.
Good luck!
