This Adobe video Photoshop tutorial shows how to create a very nice text
from leaves.

Photoshop tutorial

like this was already brought on this site, however, that was text made
from grass. Manual procedures are obviously different but both have
very good results. Certainly it is worth taking a look at the already
mentioned

Photoshop tutorial.

So we can begin. We open up leaves texture. It is, of course, possible
to use the texture of grass or try ,for example, texture of flowers. We
start to write text on which we want to apply this effect. We choose
rather bigger text font because the effect will look much better.
Select the Refine Mask and we will make main texture modification.
Using Layer Styles we can add shadows to the text. At the very end of
this

Photoshop tutorial

We will use filter Stylize – Emboss that will add plasticity to the
text. We change the blending mode to Vivid Light and the effect is
done. The entire lesson is a treatment in height detail and each steps
are explained.

Finally, we attach few images that were created using this Adobe video
Photoshop tutorial – Text from leaves. Certainly you can try this
effect on any other textures.