Step by step
As always, the most important steps come first. Here we're figuring out just how these leaves are laid out. At first glance, one might think that it's just a pile of haphazard leaves, but that is virtually never the case. There's always some kind of rhythm, pattern or structure to how objects are arranged. Pure randomness tends to look awful to our eyes, and nature itself rarely lays things out that way, by virtue of the laws it follows.
If you look closely, you can see that there's a core point where the stems sprout from the dirt. Several stems come out from there, and they each go off away from the center. Then, each stem sprouts several branches, from which leaves grow. So, you can see in this image that I've laid out my drawing to match this principle. I'm not being super careful about matching the reference image - I'm more interested in matching and understanding its essence. I like to think of it as though I'm drawing a potato plant, not necessarily this potato plant.
This also lets me focus more on maintaining the solidity and integrity of this drawing, rather than fussing over being a perfectionist and ruining everything in the process.