Texture Exporting?

I made a simple leaf and created a simple stalky texture.
I wanted to export it so I exported it in directx format. However, the texture didn’t come along with it. Is there a way to seperately extract texture as a .png or .bmp or of such things?

Thank You

You want to UV map your leaf, bake the texture to an image, then save that image.

Wait what do you mean by this? I created this texture from scratch using the materials page (f5). How do I transfer this texture over to UV map? Also, how do I bake the image?