I need editable templates created for newsletters and emails

I am looking for a skilled freelancer who can create editable templates for both newsletters and emails. The preferred design style for these templates should be modern and sleek. I will provide some of the content, but I also need assistance with content creation for certain aspects. I have attached samples of what I have in mind, I will provide the copy and images for each example but they need to be editable so another business can purchase these templates and put in their own images, copy, logo and color/branding.

Ideal Skills and Experience:
- Proficiency in designing and creating templates for newsletters and emails
- Strong understanding of modern and sleek design aesthetics
- Ability to collaborate and assist with content creation when needed