Create lips using pen tool.



Create a rounded rectangle using rounded rectangle shape tool.



Double click the layer to open layer style window. Apply settings as shown.



Reduce fill value to 0% for this layer.





Ctrl+Click the layer thumbnail to get the selection. Create a new layer. Apply Black to white gradient. Change layer mode to screen for this layer.



Create other glass. Using line tool create handles and a connecting line between glasses.



Create an elliptical selection using elliptical marquee tool. Press Alt+Ctrl+D to feather the selection. Create a new layer and fill with gray color. Move this layer below all the layers in layer order in layer palette.