BLP files store textures with precalculated mipmaps. UPDATED JULY 21, 2015: Check out my new male face texture comparisons here! My biggest complaint about vanilla Skyrim males is how old and beat-down all the male characters looks – even the ones who are supposed to be in the prime of their youth. More features will eventually be added in later patches. 4 Stones & Bricks - The Missing Vanilla Blocks. However, it only took players a few moments after the Block models are used to depict all the blocks in the game, whereas item models are used to display the items in the players, hand, on their head (helmets and hats), on the ground, in the inventory, in item frames and on armor stands.
The blocks that are added use the textures of their respective vanilla parent-block.
What is special? The best part is - nothing in this mod is special at all.