ShinChven/nano-banana-skills ? reverse-engineered prompt

Build me a small GitHub repo of AI agent skills for Nano Banana Pro, focused on advanced image generation and image transformation workflows.

I want a clear README that explains how to use the skills in the Gemini app by adding the repo as knowledge and then calling a skill by name. Include a simple project guide for creating new skills, plus a clean folder structure where each skill lives in its own folder with its own instructions.

Please create a set of useful starter skills for things like turning anime or 3D art into photorealistic cosplay style images, making character reference sheets, restoring old blurry photos, creating portrait style compositions, and adapting mecha art into realistic visuals. Also include a few Japanese style pose ideas and cover style image prompts.

Keep it organized, easy to browse, and ready for someone to extend later. Use the existing repo name and make sure the docs are friendly enough for non technical users. If you need current Gemini or app details, look them up online.