Poll: Which crossover team-ups you're wants to see?

[LunarRepublic]

snip

You don't seem to understand, he's not talking about the possible content and subject of your story. He's talking about the technique that the story's going to be written with.

If a story (and I mean ANY written story, not just crossovers) doesn't have good grammar or spelling, and if it's just a jumble of random names of things, people probably won't read it. It doesn't matter if it crosses over cartoons people like, the first thing people want in a story is that they can actually understand it. They want to be able to actually read each sentence and understand what each sentence means, and they don't want just entire paragraphs of random names and details dumped right at them, because they're going to get incredibly lost.

If they can't even understand your story, then they have no reason to read on. They'll just stop at the first few paragraphs and find a better story.

http://masonicon.deviantart.com/art/Fanwork-stamp-643226294 and how about proof-reading?

Posting an image of a slogan that you typed up doesn't guarantee that you're correct.
And you're quite wrong about spelling and grammar. The craft of a story matters as much as its content, and while occasional mistakes are fine, there's no way someone can even understand the content if spelling and grammar are completely thrown out the window. And even those few mistakes can get readers into thinking you're not an experienced author, or they can get the readers confused in important parts of a story. That's why every good author tries his best to avoid those mistakes. Proof reading is one way of checking for spelling and grammar errors, and I think that's a good thing.

Looking at the stuff you've wrote up on your DeviantArt, I'm guessing that you write these crossover stories more to your own benefit than for the reader's enjoyment.
And that's completely okay, I get that you like imagining epic crossovers and I do get that they probably seem more epic in your head. You're completely allowed to do that, but if you're seriously wanting to write a crossover story that people are going to enjoy, you're going to have to learn more about how to write good stories.