I might be misremembering things but I'm pretty sure tips like this have been shared many times before, even the FAQs on boards or unofficial posting guidelines mention quality posting here and there. Have you tried to see if your topic shares a similarity with another thread before OP? It's way useful if you make a thread that contains various tips, if there's none.
Unfortunately, a lot of them don't like to read. It might be recency bias but I've found so many people misread or misunderstood sentences on the internet over the last few years or so. It's probably just as bad as before, but I can't help but notice the 'sudden' increase in illiteracy when I spend a lot of time on written media (forums, chat groups, etc).
No lies. We've read repeated advices like this which brings me to ask what the Op is hoping to achieve with this.
If this has been discussed several times and there's still those that default it only means that this will only add to the pile and still not make any difference.
Yeah, I've seen it multiple times, most of the threads are older than 120 days and bumping it would be considered against forum rules of waking up a dead thread, do I don't see much original with a reminder on how to do the right thing, and funny enough most newbies now didn't have the opportunity to experience such threads, so this with likely be good info for the new guys.
Making a good post is all about creativity, you download your creativity, experience and wealth of knowledge to the forum in form of contributions to it's activities.
So when you make a post, preview it, read again and you should ask yourself the level of impact that very post would make on the community whether positive, negative or no impact at all. Truth is that some people don't go through such honest self evaluation before posting and it yields little or no impact.
When you appraise your post and see it's not conveying the information properly, you can support it with images, charts or even a reading or video link to drive your points home and as such you end up contributing positively to the forum. I've even had times when I constructed posts and saw it made no sense and I didn't post it since it didn't make sense to me, I doubted it would make to others.