Drawing a bunch of flowers

Start by opening a new file. Using pen tool create a flower petal shape.

Double click the petal layer to open layer style window. Enable gradient overlay. Use settings as shown.
Duplicate the layer.

Change the pivot point to centre of flower and rotate the leaf.

Duplicate the layer and press Ctrl+Shift+T to transform again in same angle.

Create another leaf using pen tool with some different gradient.
Similarly change the pivot point, duplicate the layer and rotate it.
Using pen tool create the middle part of the flower.
Double click the layer to open layer style window. Enable gradient overlay. Apply settings as shown.
Complete the flower by creating rest of the shape like leaf etc.
Select all the flower petals layers and press Ctrl+E to merge the layers.

 

Duplicate the flower and transform it. Scale to different sizes and place like a bunch of flowers.
Apply a nice gradient to the background layer.
Type the text "Have a nice day" or any message of your choice and you can use it as a greeting card too..