Another monotone subject that you have done so well with Helene! The ruffled leaf edges are so good! I would suggest looking at the two leaves on the lower left that are on top of each other. I find it hard to read. The top leaf is dark and the leaf behind it is light with highlights. I think it should be the other way around. Leaf behind should be darker and the leaf on top lighter. The top leaf is more exposed to the light source and it would be casting a shadow on the leaf behind it. You are almost there!
Another monotone subject that you have done so well with Helene! The ruffled leaf edges are so good! I would suggest looking at the two leaves on the lower left that are on top of each other. I find it hard to read. The top leaf is dark and the leaf behind it is light with highlights. I think it should be the other way around. Leaf behind should be darker and the leaf on top lighter. The top leaf is more exposed to the light source and it would be casting a shadow on the leaf behind it. You are almost there!