You're close, but a little off. Think of the autotile system as 2x3 tiles in a sense:
From what I can tell, area 2 is where the problem is. That section should be a cross-shape instead of an individual tile. This link should lead to an article that explains more in depth how the tilesets work.
The tiles in the top right corner of each group are incorrect.
Look for the blog articles that talk about how an autotile is made, to see what should be there. Or look at the default tiles to see how they're formatted. You need to start with a full water tile, then fill in just the corners with the land (don't join the land between the tiles)
Dieses Tutorial beschreibt meine eigene Methode, die weder die einzige, noch wahre Möglichkeit ist, an diese Aufgabe heran zu gehen. Ich hoffe, es wird dennoch dem einen oder anderen helfen.Scheut euch nicht Fragen zu stellen, wenn etwas unklar sein…
It makes sense that you try to focus on the squishy mages at the back of the party first, right? If the mage can out-DPS the enemy DPS before the latter can kill the tank in front, the fight becomes boring.