But we often over look two things, which are the lack of artistic creativity as well as people forcing artists to hold back on it. Why? One reason. Patriotism. A lot of people with the capability of creating things unfortunately hold themselves back by basing their characters to be in certain countries or followers of certain beliefs and limit their options with how far they can go with that story and idea. And if the artists themselves don't want to do that, people often try to force them into it, saying they should use their project to portray their country or religion in a better light for the world through their stories.
Now don't get me wrong, I do believe it's cool to do that. But not everything can happen everywhere, certain stories fit certain types of characters and settings better. If you try to force them to specifics, it kills the point of both. You're showing the place to be something it isn't, as well as having completely unrealistic characters for someone of that origin. It only ruins your project as a whole and does not end up fulfilling either of the intentions. However, if you actually have something that fits the atmosphere, has characters that actually act the part and can make it all work, then that is exactly what you should do, and some do it as well of course. But unfortunately that number is smaller, and most of the times people just sacrifice their creative freedom by limiting it themselves, whether by themselves or unfair pressure.
A much better way, however, that we tend to ignore which actually portrays your nation in a better light is by appreciating the artists when they're trying to make something. Support their work, treat them like you would when they would become famous in another country. As art grows, the other countries will undoubtedly start to notice and actually see the fact it's coming out of your country. That is something that will legitimately make them see everything in a better light, rather than poorly constructed stories about a generic superhero with no development simply being from your country. Fictional adaptions are going to be taken as just that; fictional. If you actually make your country able in terms of production, that is something that actually improves it's scene, something that makes people notice it and realize it's not all bad, rather has unrelenting potential.
So instead of holding artists back(and yourself), let them and encourage them to make good things. Appreciate them, support them, and spread them. It is the only way you can shed some positive light on your countries and beliefs artistically, not through forcing it into fiction when it does not fit in but rather producing quality content.