I can't seem to make leaves and dirt

I am quite new to MCreator and mod making in general, so I apolagize if there's a very simple fix. But basically, I'm making blocks for a new biome and I can't seem to make both leaves and dirt. When in game, the (new) leaves block has the black and pink block texture, and same goes for the (new) dirt block, AND the original dirt block. I might be messing up in the whole 'Render type' tab and textures in general, but either way, I can't seem to figure out how to make the new leaves block, dirt block, and new dirt block not have the black and pink block texture. Any Help is appreciated!