The Cave and Trade Upgrade

Here is the 'Cave and Trade Upgrade', an Add-On / Texture Pack that adds two new mobs and two new ores with various different functions to your Minecraft world. I want to clarify that this is not in all respects an Add-On, but for the most part it is a Texture pack that changes the appearance of some items and blocks of the game. Also, there are a lot of changes and corrections to be made. I hope that the content is still to your liking, in addition it would be wonderful if someone would also recommend me some ideas to update something or even completely new features that you would like to see (obviously all in vanilla style).P.S. i am not english