At least one screenshot is required. Please read this thread if you haven't done so already.
Quote from CyborgDragon »
If you are making a thread for your texture pack, whether WIP or released, it must have at least one screenshot. If it doesn't, it will be locked. Also, do not accuse others of stealing your work without proof. Do not troll, flame, or spam in simple texture pack threads. If you don't like them, don't post. You will be warned otherwise.
[16x16]The Enhancement Texturepack 1.6.6 V2!!