FOSS gamedev and creative worlds

I posted this originally in Bugs and Problems, because I thought the bricks looked kinda... cruddy, no offence. I took it as a problem, and I just wanted to help the game sorta look more realistic. I'm not going to make a texture pack, but for whoever wants this, I'm perfectly happy if you just replace the old bricks with these.
:)
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here the link to the bricks
https://www.dropbox.com/s/jbk7ad8kv7kmhhe/brick.png
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This idea comes from a pixel artist website. I changed some of the minor parts I disagreed with
https://www.dropbox.com/s/5sz70a5gav7hfdf/Bricks.pdf
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have fun.