They're called flourishes. While they can be done in Photoshop I think, most of the tutorials point towards vector programs such as Illustrator or Inkscape. The easier method would be googling for free flourish brushes for photoshop.
Here's a tutorial for creating flourishes with the pen tool in photoshop.
i don't want to illustartor...
but i want to download brush pallets where can i get??
And how to do background colour pink&green colour ??
Open Brush Presets panel.
Click the little button at top-right of panel to get a menu where you should see the name of your newly installed set of brush presets in a list of names.
Click the set you want then proceed with the dialog that appears.
Now your new brush presets should be available in the Brush Presets panel.