Modern Minimalistic Invoice & Brand Design Kit

I'm in need of a talented designer who can create a modern and minimalistic invoice, as well as a comprehensive brand design kit, business card, letterhead, and other custom designs. I do not have any specific brand colors or themes yet, so I will need your expertise and creativity to come up with suggestions.

Key deliverables:
- A modern and minimalistic invoice
- A complete brand design kit
- Business card and letterhead designs
- Additional custom designs as needed

Ideal skills and experience:
- Strong graphic design background
- Experience in creating brand design kits
- Ability to suggest and implement suitable colors/themes
- Proficiency in modern and minimalistic design style
All designs in PDF , jpg and editable formats