Items looking strange in Hotbar.

I edited a Texture Pack. The Faithful 32x32. I just changed swords and armor. Stuff for pvp. I changed the items with items from a 256x256 Pack. When i started MCPE and chose the selfmade pack, then i saw that the items in hotbar looking strange. They looked ugly. But if i grabbed an item with the hand, then the item looks normal, but not in hotbar.

I hope u can fix this, because itll be cooler.

Finndus.