There is really no proper or improper way to build an aircraft, there is only what works and what does not work. The difference being that "Proper" implies that there is a golden standard for every builder to follow, which severely lacks in this community, which is a great thing because it can incorporate many building methods and philosophy for each users without arbitrary penalties.

However let's go back to what I meant with 'what works/ doesn't work'. "So what does it mean?" as someone asked. Well it means that regardless of the level of detail and parts put into it, if it lacks functionality, and/or not a lot of people enjoy it due to part count or lack of uniqueness, it does not work. So what works in this case? Well as of now, anything adequately detailed but still is less than 800 parts (or 400 parts if possible) will work, it can work better or worse if its what the community has not seen before, depending if it looks exciting or dull. Anything over 800 parts may work better but its a risky strategy since practically about half of mobile users are now cut of from it due to high part counts. Meme builds work in wondrous fashion, and you may have even seen the purple truck or the plane covered in airbrakes whose popularity skyrocket.

Since I am only accustomed to building airliners, I can only offer you two building methods for wings that I know of: Triangulation, and Single Cast. Triangulation is a higher detailed wing assembly method that employs a numerous amount of triangle shaped fuselages to form an accurately shaped flat bottomed airfoil. But consumes a lot of parts. Single Cast only uses a single fuselage scaled up to form a wing section, it uses less parts, but is less accurate shape wise.
Wing Assemblies are pretty much the only assembly that differs between users and I have two examples of it Triangulation and Single Cast. Fuselages for aircraft does not really change with each user visual wise.

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Experiment and have fun!

Use hollow fuselages.

A really good advice I can give to beginners is:
Draw your planes! You’ll get much smother curves on the drawing than if your freestyleing in simple planes.......you can also import your drawings and use them as background.
(Sry for my bad english)

@Garretto3, the Lift remains the same, and the Center of Lift still is the aerodynamic Center.

@Garretto3 nah it leaves them unaffected (heres an example)

Does scaling the wings to that affect the center of lift at all? Having some difficulties of my own lol.@Axartar

if your building something fictional without a blueprint, I recommend getting a basic shape/frame then slowly adding necessary parts, if wings dont fit or look good scale them to 0.01,0.01,0.01 and hide them same with engines. then slowly add the tiny details. essentially frame,flesh,function,detail. I hope this helps!