Well to begin with it is best to study the instructions but not in a "parrot" fashion". I doubt that many here follow the instructions in the order they are sectioned into or within each section.
You have to think ahead. Can I do that after I have finished this section ie in an aircraft the cockpit area is more or less finished before starting on the outside. Plus even in the cockpit it is easier to finish off some parts before putting the rest of the cockpit together.
I always think before going further can I get in there to paint or attach
decals before I assemble this or the other. Sometimes you will have to mask with tape finished areas to prevent paint getting into and spoiling finished work..
Good idea to dry fit which gives a good idea of what you are doing how far can I go before I paint etc. Can I leave that or this off until later as it will make it easier to construct. If possible leave off all the little bits and pieces which can get knocked off easily until the last possible moment.
Take one model and give it to 10 model makers and they will all have their own agendeer on how to go about it. It is a matter of finding the way that work s for you. Just use the instruction sheets as a guide not a bible.
Hope that goes a little way to your problem. And best of luck.
Just come back on any difficulties.
Laurie
PS if you go into Profile you can add your first name