First off you need
http://forum.blockland.us/index.php?topic=195092.0 Put this in your Add-Ons folder. OK lets get started!
Step 1: Go into config
Step 2: Go into content
Step 3: Make a folder in content tittled data.
Step 4: Go into the data folder you just made.
Step 5: Make a folder in data tittled shapes.
Step 6: Go into the shapes folder you just made.
Step 7: Put in here your new Textures!
Step 8: Restart (or start) Blockland.
Step 9: Go onto Start Game.
Step 10: Have fun looking bricks at things with something else on them!
(Note: You have to go find these textures for yourself i shall post some later if it helps)