Back in the day, making mockups meant either digging through stock sites or buying PSD templates—expensive and slow. Now I just use Midjourney to generate mockups for laptop screens, clothing, flat lays, packaging, phones, etc. In a few seconds, I get a usable photorealistic image. Here’s the prompt structure I’ve figured out: first, describe the core subject clearly; then specify the lighting separately, the more detailed the better—like soft light or studio light; control the perspective with camera angle, write out top-down or eye-level clearly; use terms like clean background and negative space to tidy up the composition; finally, add a style constraint to stop MJ from going wild and messing up the details.
This approach gives pretty stable results, though you still need to double-check before using commercially.
Packaging and clothing flat lays are especially easy—way more efficient than digging through template sites. As for more detailed template parameters, there are ready-made prompt packs online, depends on what you need.