How to make Frames - Tutorial-1
Step1:Load background image
step2:Add a white layer,then right click on the active layer thumb->import alpha channel
Result:
 
How to make Frames - Tutorial-2
Step1:Load background image,then add a white layer  
Step2:Add a new path,,then right click on the active path thumb->import path
Step3:Convert path to selection,then feather the selection
step4:Move the existing selection
Step5:Delete the floating selection