Your parts look nice. What kind of paint did you use?
In past full re-builds I've used 2k aerosols. It's 2 parts that activate together inside the can and make extremely durable surfaces, especially the ceramic type. For basic colors, I could get away with just using the can as is. Fancier colors, I had to do the whole 2k prime, paint the color I want then do a 2k clear over top to protect the cheaper but nicer color. Always worked well but it's just expensive at about $25 a can.
Now, there's a place over here that can do custom House of Kolor paint codes and add it to the 2k paints and they go for about $35-40 per can. But....House of Kolor baby! I wish that option was around when I was doing that stuff.
The 2k stuff is great. The nozzles are amazing and do a good fan pattern like a real spray gun. And the nozzle stays pretty consistent, no gumming up over time, which is made better if you're in the habit of putting the can in some warm water for a bit to make it flow even better. (Makes cheap rattle paint work better too) Only downside is because it is a 2 part system, once the can is activated, it's no good after 24 hours, so you need to have everything you're going to paint ready and do them all at the same time or you just wasted your money.
I've even used the 2k stuff to repaint guitar bodies and used the clear to gloss over wood that was stained, kind of like a Fender lacquer finish. Polish it up and it looks factory, maybe better. Regular rattles and clears will feel tacky even after a year because body heat softens it up.
It's all acrylic rattle can.
U-Pol Filler primer 3 coats rubbed down in between & left a day.
Then Motip 400ml rattle cans 3/4 coats 20 mins or so between coats
After the base coat (black),
U-Pol 500ml Lacquer rattle cans another 3 or 4 coats. 20 minutes per coat get it all on as thick as I can & depend entirely on smoothing the lacquer coat with T-cut & or 3000 wet N Dry.
The black paint is Metallic & you probably know metallic paint doesn't rub down well as it screws up the glitter.
Harden it off with a couple of wax coats after all the T-cutting & buffing is done
I've used Motip Paints for years, usually use their filler primer & lacquer as well but had the U-Pol in the garage from a job I did on a neighbours car wing when she redeveloped a trolley bay at Tescos, so thought I might as well use it.