Chris, I’ve been at this hobby off and on for about 40 years. Admittedly more years “Off” than “On”, but I have managed to pick up a few nuggets of wisdom along the way.
First is that those who demand perfection are going to be continually disappointed. There is absolutely nothing wrong with “Seeking” perfection, but it has to be tempered with a dose of reality as well. We all start a model with a picture of the finished product in our heads. We can see every perfectly aligned panel line, we can see the perfect demarcation in the paint colors, we can see the perfect weathering and the perfect decals. The problem is that the picture in our heads isn’t real, it’s a picture. The model that you hold in your hands is real, and like everything else in life it is going to have a few flaws. They may be minor, they may be only things that you can see, but they will be there.
Second is that the number one thing a modeler must have is patience. We all must have the patience to do what is necessary to accomplish the finished goal or we will never even come close to that picture in our minds. Filling seams is tedious and it takes time. Properly trimming parts and aligning them before gluing is tedious ant takes time. Painting, decaling, weathering, all tedious and time consuming. If someone doesn’t have the patience to put into a model, they would be better off finding another hobby because this one demands patience.
Next is the fact that we are going to make mistakes. We are going to leave a visible seam or we are going to mess up a demarcation in a camo pattern or we are going to mess up a decal. We are human, things like that are going to happen. When these things happen we have to decide whether the mistake is something that has to be fixed or something we can live with. The perfectionists will correct the problem and their model will look better afterwards.
Finally, and I realize that this one is open to debate, is that this hobby has very few true skills. It has a lot of techniques, but not a lot of skills are required. My definition of a skill is something that you can do better than most people even though everyone has been taught the same way. A technique is something that everyone can do equally well given the same instructions. Painting is a skill. Weathering is a skill. Properly filling a seam or applying decals are techniques. Gluing parts together is a technique; knowing what glue to use when is a skill. Sanding is a technique; knowing what sandpaper to use is a skill. What separates a mediocre modeler like me from some of the experts is the development of their skills, not necessarily their techniques. If you and I sit down with exactly the same seam to fill, read and follow the same directions precisely, odds are that the results will be pretty much the same. If we both sit down with exactly the same three-color camo pattern on exactly the same model, you’ll probably blow me away because that is a skill.
To get close to the model in your mind’s eye you have to combine both your techniques and your skills. If your techniques are lacking, that’s easy to fix. Just find a better technique. If your skills are lacking, the only thing that is going to improve that is practice and time. Just don’t be disappointed when the results aren’t what you envisioned, that’s all part of modeling. Fix 'em, scrap 'em, keep 'em around to remind you of mistakes made and lessons learned. Regardless of what you do, just open another box and start again.
Later … I forgot to add that my goal with every model that I build is to make it better than the last one in some way. It may be something small or something that only I would notice, but every one has to be better than the last.