Texture Pack Making, Item Sizes in Minecraft [duplicate]

Question

Possible Duplicate:
How Do I Make a Custom Texture Pack For Minecraft? (16x16)

I am going to start making texture packs, as some of my friends have given me ideas for them. I just need to know if there is any way I can tell how much space (in pixels) I have to make an alternative texture for an item. Any ideas?

Also: is there any program that I can edit texture packs, so that I can tell what the section I am editing is in the game?

Answer 1

Most basic textures are stored in a single image. You can use any image editor, from Paint to Adobe Photoshop to make your texture pack. Your best bet is to download a source image with labels and draw your texture pack over the top.

Water and lava, as well as mobs require editing other files in the same manner.

Here's a tutorial on how to get started.

Answer 2

If you go to %appdata%\.minecraft\bin on a windows machine and open the .jar file there are all the default texture files, the blocks are in the terrain.png image and the items are in gui\items.png just edit these (and any thing else you want to reskin) using any image editor and put them in a .zip file in the texture pack folder to use them. The pack.png file is the image that appears next to the pack in the menu.