Drawing with textures

I collected a small log with some broken bark, a pine cone, three poppy heads, and a shiny leaf.

I have to admit that I'm still struggling to convey different textures in a drawing. For instance the leaf was quite shiny, but I don't think this really comes over in the finished drawing.

I tried using a mixture of media, using a soft graphite pencil to create some of the texture of the bark. But I kept reverting to my sharp 2B pencil to get more definition around the poppy stems, which were very light-coloured and therefore stood out from the darker bark in the background.

Anyway, here goes...