Lead Generation for Custom 3D Prototyping

I run a 3D printing business producing custom parts, prototypes, and branded/promotional items. I'm looking for someone to generate qualified sales leads — this is a paid pilot batch of 10 leads, with ongoing monthly work available if the results are good.

What counts as a qualified lead:

Real business or individual with a genuine need for custom 3D printing (prototypes, promotional items, branded merchandise, small production runs, replacement/custom parts, etc.)
Contacted directly (email or LinkedIn) and responded confirming interest
Provided at least a basic description of what they need (not just "sounds interesting, send info")

What I need delivered:
A spreadsheet (Google Sheet or Excel) with, per lead:

Company/contact name
Contact info (email/LinkedIn)
What they need (brief description)
Date contacted
Confirmation of interest (quote/response summary)

Payment terms:
$5.00 per qualified lead meeting the criteria above, paid as a fixed-price milestone for the batch of 10 ($50 total). Leads that don't meet the qualification bar (no response, vague interest, unrelated industry) won't count toward the batch.

Good fit if you have:

B2B outreach or cold email/LinkedIn experience
Familiarity with small business, manufacturing, prototyping, or e-commerce sales
Can work independently with minimal oversight

Please include examples of past lead gen work in your proposal.