Artistic border to an image

1. Open a one-layer document, then click the Background on the Layers panel.
2. Choose the Rectangular Marquee tool (M or Shift-M), then draw a selection marquee. Position the marquee where you want the border to be.
3. On the Options bar, click Refine Edge.
4. In the Refine Edge dialog, choose On White view (W), then adjust the Radius,Smooth,Contrast, and Shift Edge values to roughen the edges.
5. From the Output To menu, choose New Layer with Layer Mask, then click OK.
6. Click the Background, then press Shift-Backspace/Shift-Delete. In the Fill dialog, choose Use: White, Mode: Normal, and Opacity: 100%, then click OK.

Just check your image it was so easy.