autotile help

I was wondering if anyone had an easy explanation on how to create a autotile? Specifically a water one.   I have one that when it's used, the water is kind of sectioned.  Is this because it's too round and not square enough? 

Files attached below, any help would be appreciated =)

It's because the edges are too tight around the middle. I've attached a template to this post.

Square 1 is what shows up in the palette - it doesn't affect what is drawn in-game. You probably don't need me to go over everything; I can if you want, but mostly, square 11 is where you are having your trouble. It is that square that repeats for the center of water. What is going on with yours is that some of the shoreline is within that square, so it's repeating.

To fix it, just move the shore a little more away from the center and make sure nothing is in 11 that you don't want repeating.


But IDK, I downloaded yours and it looks like all of that is appropriate (and it works fine when I tested it), so maybe it is how you're drawing it? Did you shift-copy a section and then repeat or something?

Also, I think your 2, 3, 4, 5 squares are messed up. What you have as 3 should be 4 and vice versa. Similarly what you have in the 2 square should be in the 5 square and viceversa.

Thanks very much for the reply (and sorry for the late response) I'll tweak it as you say and  hope it does the trick =)