A Red Sports Car in the Rain (Photoshop)

I found the best raindrops-on-glass tutorial here, and my application of it is below.

There are a lot of "raindrops" tutorials on the web, and at least half of them are just awful.  This one was therefore a pleasant surprise.

Better Raindrops on Glass Effect -- AND I Made It Myself (Photoshop)

I really wasn't satisfied with Photoshop tutorials for making rain on windows, that I found on web. The drops just looked icky, not realistic, not shaped like real raindrops. I finally found one that does a very nice job of producing realistic raindrops, and I used it in the picture directly below.  (See the tutorial at this link.)