Collection Cloud Shapes Transparent Include Types

Design a collection of cloud shapes on a transparent background. Include various types of clouds, such as fluffy cumulus and wispy cirrus. Ensure that there are around 12 different clouds, with varying sizes and orientations. The background should be a soft gradient from dark blue at the top to lighter blue at the bottom, creating a calming sky effect. Adjust the cloud shadows to be softer and add a subtle glow effect around some clouds to enhance a dreamy atmosphere.