[ Closed ] Custom tilesets?

So I was just testing a custom tileset.  I downloaded one online, and made a map using it.
When I play the map, it looks fine.  But when my brother joins, it is just all crazy colors and confusing.

This may be an issue because I'm using a DDrace server and he is running with the normal Teeworlds client.
I will test this tomorrow, but not sure if it will change anything.

In the meantime:
Is there anything special you have to do to make it so when people download your map, they automatically download the tileset that goes with it?

And is there anything I should know about making a custom tileset?

Sorry if this information is provided somewhere, which I expect it is.  But in my brief search, I didn't find it.

Edit:
When selecting tiles for your map embed them!  Problem Solved!