I made a few maps myself but I'd recommend not to post them here. this will totally spoil the fun for players to find out the map layout on their own. You can post that you made a map and give it to those who explicitely ask for it. Otherwise coops will get boring as hell, just following someones step-by-step guide to think this further.
And by the way, you can't even win with this map, because half of the units that will approach you are missing.
(and the recon hero on the left side of the middle stands 1 hex northeast