Start here: what makes a good logo, prompt pack or digital product
A few rules that apply to nearly every digital product:
Logos: simple shapes, readable at the size of a phone icon, and they work in one color. Always get the original vector files plus PNG versions.
AI prompts: tell the AI who it is, what you want, the format, and an example. One good example beats a paragraph of instructions.
Printables and templates: design for the person using it, not to impress. Clear headings, enough space to write, and it prints on normal paper without cutting anything off.
Selling digital goods: a free preview, a clear picture of what's included, and fast delivery after payment matter more than fancy design.
Share what you're making in this topic and I'll give honest feedback.