Raindrops on a Window - My Latest Photoshop

My latest desired Photoshop technique is to put realistic raindrops on a window pane.   I worked on this over the past three days in an attempt to learn some ways to do this.

UPDATE:  I didn't like the odd shapes of the raindrops in my first attempt, directly below.  So I changed the way I created the random shapes, by using a simple hard round brush to create a defined brush set, then turned on the shape dynamics, scattering and smoothing brush presets, to create the rounder shapes.  I also filled the window pane with tiny droplets as well as the scattering of larger droplets.  This makes the pane look wetter and more realistic.

Here is the update:

My first attempt is below.  The tutorial I used can be found at this link.

I used "distort/glass" to make the scene slightly blurry, as if the pane was wet from the rain, then used noise and other Photoshop tools to create the raindrops.  I used a brush to create the falling rain. The result is acceptable, but I want to learn some different techniques to create this rain effect.  My Photoshop is directly below, and the original photo is below that. [See update above, using a better technique].

Here's the original photo before the Photoshop applications.