https://creativemarket.com/UpliftActions/1148829-110-Brush-Bundle-for-Photoshop

All our brushes are created from REAL photos of snow, fog, clouds and more to give you the most ultra-realistic effects possible, and are built for application on even the largest of images. Download includes 2 sets of brushes for each collection, 1 for CS5 and earlier (as well as Elements), and 1 for CS6, CC and newer versions of Photoshop.

See each collection of Photoshop Brushes here:

• 25 Snow Brushes: https://creativemarket.com/UpliftActions/1120231-25-Snow-Brushes-for-Photoshop
• 15 Smoke & Fog Brushes: https://creativemarket.com/UpliftActions/1137997-Smoke-Fog-Brushes-for-Photoshop
• 40 Cloud Letter Brushes: https://creativemarket.com/UpliftActions/1147478-40-Cloud-Letter-Photoshop-Brushes
• 30 Real Cloud Brushes: https://creativemarket.com/UpliftActions/1147476-30-Real-Cloud-Brushes-for-Photoshop