in this tutorial show another simple idea to create glass picture frame.
Final Image Preview:

Step1
in first step chose picture to create frame up on,I am chose this one:



Step2
make new layer and draw Rectangle and fill in white color


Step3
now double click on the layer an do this effects











Step 4
Create new layer , press ctrl + layer1 to select the rectangle , go to select>modify>contract ,put value 20px and press ok , you new selection .

Step 5
go to select>modify>smoth and put value 5px and press ok, fill new rectangle in white color , double click on the new layer and apply this effects :




After apply effects ,pic appears as this result:


Step6
Add your favorite pic , must be fit in small rectangle :



Step 7
Create new layer, Press ctrl+layer3 to select the small rectangle, chose Elliptical tool and press Alt and draw an elliptical shape to take this result:



Step 8
Fill new selection in white , change opacity to 15%

FINAL Show: