It is a little but small thing to accomplish. I have made it blend in, and i have made it stay in one place instead of going all over the floor. it took me like 30 minutes to figure out why the piston wasn't working, and then i saw that the repeater was stopping the redstone from reaching the piston. destroyed it, and it worked :D i now have:

• My own house in an NPC Village.
  
• A big house.
  
• A second floor.
  
• A bathroom
  
• A working shower.
  

I would have a video but Fraps lags so bad on this computer. If you know how to put a world up for download, please put it in a comment. I will then give the coordinates of my house, and you shall be there :DDDD Thanks!

Additional Notes

Please do not say I copied this from someone else. I made it by myself. I actually don't know any youtubers that made videos of working showers. Thank you! :D