Print designer for T-shirts - Harley Davidson style

HI, I'm reaching out for a unique project for my customer who sells bikes celebrating their 65th anniversary. We plan to create T-shirts and have a concept design ready, inspired by the iconic style of Harley Davidson tees and using real pictures of the founder, building and logo..

Could you assist in transforming it into a digital illustration suitable for T-shirt printing? Also, please provide an estimated cost for this service.

Check the attachment for some examples.

I need someone who can create this in a short period and who is qualified.