How do I make a big texture of multiple textures

I want cover a whole wall. When I put the texture up it becomes very stretched. I want to know if there is a way to tile he texture and have each texture fade into each other so there’s no strong lines showing. Is this possibles? If not what should I do?

the material has a tiling property. divide 1 by the units your wall is wide and high and use the results accordingly.
I don’t know what you mean by fading though. If you mean your textures edges, they should flow inner to the other side seemlessly, which is achieved in your favorite texture editing tool.

What tool are you talking about? And yes I get these very harsh endless and makes my wall look like a bunch on squares rather then one big texture