[Gogar]

similar to what serene said,

Don't just make a bunch of super-specific hashtags.

Spend some time on instagram searching for porsche- or plating- or cerakote - related hashtags and find the ones that have a lot of reach.


#porsche
#cerakote
#plating
#powdercoat

etc


When you post your pictures, use whatever hashtags you found that have wide reach and - in addition- make some fresh ones specific to your work.

Anyone who has certain hashtags saved will see your stuff.

And, if you haven't already, make one that includes your business name and use it religiously for every single post.