I suspect Sammy will be along shortly to help you out. I have some ideas but he does that stuff for a living.
Joe... I am a carpenter. BUT there are so many fields in carpentry.
Well, I figured you would know more than I. Well, I still think that.
I've seen my friend John, take a dining room table or dresser... and take out the dents and/or scratches, and make it look new.
I have been a carpenter most of my life. Went from framing houses, to siding them, then pouring concrete around them. Then did renovations & additions. Now for the last 11 years, I've been an (interior) finish carpenter.
As a trades-person, you can only learn so much academically. The "tricks" to the trade, can only be learnt "hands-on". To take something that is only 98% good, and make it 100% good, takes know-how.
I sucked at paperwork/tests (I'm dyslectic), but adapt quickly in a hands-on situation.
Just because someone passes the tests and becomes a journeyman (carpenter, electrician, plumber...) don't mean they are good in the real situation.
Whether it is my buddy John, or me, or someone else here on the forum.... experience still rules.(sorry for the rant)