Hey Scott,
Well I will try to explain my style of work...
Dry fit... Of course is needed because when you shure you cut additional job at half (at least) If is dry fit good, after somethimes you dont need to putty at all.
Best thing to try dry fit of fuselage is cut small pieces of
tamiya tape or whatever you use... aprox. 1 cm lenght and when you joint 2 parts of fuselage, put tape accros the joint.
There you will see how joint along together... for wings it depends what style of wing part you have... but try do with those tapes...
Small parts... and painting...
let me say example of cockpit... I glue almost everything on "dry plastic" I mean without paint... dont glue pilot seat and control panel...
after I finished I paint first in basic color with AB and then I'm pulling out details with ordinary brush... and of course depends what scale model is.
If is 1/72 it's easy to do like that, but if is 1/48 you can also do some parts with AB but masking other parts of "basic color"...
Next thing is how want to your plane to be detailed... with aftermarket of strach build.
My oppinion is that usually 1/72 (expecially spit) doesnt have possibility for opened cockpit (canopy) then I think it's not to mutch important to do some big build inside cockpit because almost nothing cant be seen thru canopy inside. Spare your times, nervs, etc.
Glue all together paint in basic color and then with brush pull out details sutch as silver/aluminuium rudder pedals, black handle... etc... after that take a tootpick and little sarpen it with cutter to end be like a needle... adt put end into various color... white, red, green, yellow... etc... of course not all at once... step by step, color by color... and touch with tootpick buttons on the cockpit... they are usually 90% white or some light grey... and other 10% is red, blue, yellow...
and you will get great cockpit in every scale
Glue it into fuselage what is also painted in cockpit color... and after that joint all together and glue it...
I'm using
tamiya extra thin cement... for me is very good...
I dont know if I had explain it well the basic and start of modelling the plane...
Remember most important thing:
Every next model will be better and better
Try it, learn it... ask for help... If I can help I'm here
ROman