So, if this is the third draft of your second SCP, you've probably heard this before - but you should use the SCP sandbox. It allows for wikidot coding like tabviews or collapsibles, and its what people expect. I know that a lot of people are going to be dissuaded from critting stuff like this because 9 times out of 10, a google doc draft is a sure sign of someone who either hasn't read the guides or refuses to follow them. I'm not trying to insult you at all, its just what most people are going to think.
Moving away from the doc, there are a couple of examples of either unprofessional, overly specific, or just odd writing. These can be hard to spot, but I'll try and go over a couple of examples and why they are problematic:
Any individual to come in contact with an instance of SCP-XXXX is to act as if the entity isn’t there.
The use of "act as if the entity isn't there" isn't ideal. Mainly, there are more concise(but still descriptive) ways to articulate yourself, like "is to ignore the instance" or "is not to acknowledge the instance". The Foundation in general would choose a word that gets the point across in a comprehensible, but concise, way. Using this kind of phrase that is informal doesn't really sound right, but doing the opposite - inserting big words that have little actual purpose into the article - is just as bad. Theres a thin line between the two that you have to walk, which can be difficult, but you'll get the hang of it as you write.
wearing apparel most commonly associated with a cartoon hunter
The cartoon part is kinda spelling out what you are going for a little bit too obviously as well as sounding informal. The Foundation probably wouldn't use the word cartoon to describe this sort of thing. You might want to use something that is a little more descriptive and also professional, like "stylized" for example. However, in this instance, I think the cartoon thing is better implied than stated. "wearing traditional hunter's apparel, including[…]" would be a more professional way of wording it.
There are a few more places with odd wording, but those are the two that stood out to me most. Moving on…
the greeting can vary
This is a big issue with the containment procedures to me. The greeting cannot vary, at least not in the eyes of the foundation, considering what happens if you fuck it up. There should be one, maybe two tops greetings that everyone has to follow to prevent some junior researcher going further than was perhaps wise and getting a bunch of people killed. Containment procedures that are this lax would never stay for long.
Finally, I noticed a couple of instances of periods being placed where commas should be and breaking up sentences really awkwardly, like this:
Once the individual is caught, the instance of SCP-XXXX will combust. Killing both the instance of SCP-XXXX and the individual it is persuing.
You should go through and fix those.
So, line by line aside, there are a lot of big issues with the story. The first thing I notice is that this kinda seems like an off brand 096 to me. A deformed creature that, if procedures are not followed, will relentlessly hunt down and kill someone? With no other developing story? Its just too similar. I also notice that you make a huge deal about how it cannot be contained… can you not just lock it in a containment cell and leave it there? It seems like it will only be dangerous if someone interacts with it, so why not just leave it alone forever? It seems like an article making a huge deal about "OH MY FUCKING GOD THIS THING IS GONNA DESTROY THE WORLD IF WE DONT DO EVERYTHING WE CAN TO CONTAIN IT HOLY SHIT" when really it just seems… like another object. If there is a reason why they can't contain it, it isn't made clear. And its fine if they can contain it, by the way. You don't need massively dangerous and powerful objects to make a good article.
Also, I noticed that the good morning thing isn't really talked about in the description. Its an important part of the object, so it should be described regardless of whether or not it has already been mentioned in the containment procedures.
Finally, I think there just isn't much of a story being told here. Thats what an SCP is, after all - a short story. Look at some of the best articles on the site. Excluding some of the series 1 stuff from a time long gone(looking at you 173), they all tell a really interesting story. SCP 3008 is a great example of this, telling the story of the survival of a group of people stranded in an ikea, of all places. 4000 tells the story of a twisted world which cant be referred to, lest the worst happen. 914 is nothing more than a huge collection of tiny flash fictions. This article doesn't really have a story, though.
Per 
