Hello! I see you are looking for some alternative textures.

This is how to change some textures for alternatives I made:
(If you do not know)
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--Step 1:
select the desired alternative texture from this folder and copy it.
(ctrl+ C) Windows		(cmnd+ C) Mac


--Step 2:
go to the "blocks" folder and paste and replace the texture.
(ctrl+ V) Windows		(cmnd+ V) Mac

--DONE.
hope you enjoy!

-Sapix