For the best result, we’ll try to combine in a group all the layers containing the berry and its highlight (hold on
Ctrl button to mark out the necessary layers and click on the left mouse’s button when taking down the marked layers on
Create a new group selection). Make three copies of the last made group and select
Free Transform option to place the copies the way represented below:
It’s time to represent now the primary layer of a small leaf, colored with
#33A02C. For the beginning we’ll choose the
Rectangle Tool (U) to represent the leaf’s pattern and then press on Alt button and use the
Ellipse Tool (U) to make the made pattern looking like a real leaf. Place this layer lower than the group containing the red berries (on the layers’ panel).
We have to picture also the leaf’s so-called veins, colored with
#257320, applying the
Pen Tool (P). Their shape may be corrected with the
Convert Point Tool.
Combine in a group all the layers containing the small leaf (press
Ctrl button to mark out the corresponding layers and make a click on the left mouse’s button when taking the marked layers on
Create a new group selection). Make two copies of the leaf’s group and choose again the
Free Transform option to make the copies looking like on the picture below. Apply the parameters of the leaf’s primary layer for the copy of the leaf situated in the middle.
Blending Options>Gradient Overlay
Gradient’s parameters: 
Combine in a group all the layers containing the red berries and three leafs (holding on
Ctrl button, mark out the appropriate layers and press the left mouse’s button to move the accentuated layers on
Create a new group selection). Make three copies of the last made layer and choose
Free Transform option to turn over the copies or turn them around and place them the way indicated below:
Insert now the congratulation inscription, taking care of the demands shown next table:
Apply the next parameters for the text’s layer:
Blending Options>Stroke 
The postcard is finished!
View full size
here.
