User blog comment:TheMaster001/How can I create my own maps and flags?/@comment-8815453-20120424154935

Well, there's MS Paint and Gimp you can use. For resources of flags, you can use Wikimedia's collection of flags to use. Just mix and match, or colour over it to make another design.

For maps, you can check Wikipedia's map section, here or you can check for other places to obtain maps.

To edit a map, you would have to erase and create borders for nations. So for example say you want the Ukraine united with Moldova, just erase the Ukrainian-Moldavian border, and there you have it.

Hope this helps.