no longer positive if this can be a excellent house for this publish. Questioning if somebody may just assist (paid?) design for 3d print/fabrication an adjunct to an current client product?

Briefly, i purchased this trailer hitch ski rack and I have were given an concept for a couple of further attachments that might want to be anchored to the principle construction.

https://chuckrack.com/merchandise/chuck-bucket-ski-rack-w-base-post

How may just I’m going about getting it designed or deliberate?