I really hope I got the oil filter on right.

Alright, so as I was instructed, I got the old oil filter out of the xj750mk as soon as I could work with my neighbor with the compressor to get it off. Got to love air tools for this kind of work, took a while but out it came.
New filter, New aftermarket 17mm filter bolt, new O-rings....
But in the end we installed the filter backwards. I think?
We couldn't figure out which way it went in, so I tried to look it up which side had the spring, where the filter was supposed to be in relation to the cover and engine, first thing I found was this video:

I was too excited to look at the comment below it that said he had the blasted thing in backwards.
I naturally put it in as was shown in the video.

Now, I haven't ran it at all, thankfully, since I got the filter in, aside from the 10 seconds it takes to get the new filter wet. I just rolled the bike to where I park it, and sat content in my having done as k-moe told me to (really good feeling), until I started second guessing myself as I do when I do anything at all.
So I looked it up and found this :
http://www.dansmc.com/changeoil_washer.jpg
as well as the comment from the video from before. So I just went outside, at 12 at night, and took the cover off, got bloody filthy, made a mess of myself and my bathroom sink, and got the filter and cover arranged as they ought to be. I hope. I really really hope.

So, please tell me I did it right.
The bolt was sticking into the cover while I did this:
Since the spring was not affixed firmly to either side of the filter, I took it and slid it onto the bolt first. I then slid the oil(y) filter over the bolt next, with the concave side directly up against the spring so that the side of the fram filter on which the black gasket thing juts out from the surface would be in contact with the face of the engine that the filter mounts to. I then fumbled in the dark until the whole assembly somehow got affixed to the bike and no more oil was draining all over the driveway. I refilled the oil, ran it for ten seconds to get it splashed about, I now have have a nice meniscus of oil in the little window below my brake pedal.

My neighbor plans to wake me up at 8am to go riding for an hour tomorrow/this morning, and I'd really like to know I didn't mess this up.
Is it correct?
Bolt----->cover------>spring------>filter(concave towards spring)---->Engine?

Could the fact that the spring wasn't somehow glued to the filter like in the video, that I just slid it on over the bolt and slapped the filter into place, cause things to not seat like they should?

 

This post from Fitz shold clear things up for you.
First oil filter/ oil change.
Based on your description you either left out some parts, or are missing them.

Also, you want the oil level in the sight glass to be close to the top after it has ran back into the crankcase following the first run of the engine after the change. I usually leave just a small bubble showing. It makes it easier to tell if the float needles have stuck and filled the crankcase with fuel.

 

Based on the diagram in the Fitz post, both parts named 3, the little black gasket numbers, they came on the filter already installed, they are where they ought to be so I forgot to mention them. The other part I don't have is the little No.7, the washer that goes by the spring. I plan to pick one up at some point, but it was noted in the text "not super-critical, just get one and install on the next oil change", which I shall do. So I should have all of the (critical) parts necessary to get the filtration working.

I just want to know it went on as it's supposed to, that the spring is supposed to be between the filter and cover, not between filter and engine, and that the filter is supposed to be installed with the protruding gasket against the engine face and not against the spring.

I'm also confused by the usage of the phrase "flat side" in the text you linked,
"The filter goes into the housing with the flat side "up" (toward you) so it ends up with the concave side toward the front of the bike and the flat side is pressed against the motor by the spring."
since the gasket juts out on the non-concave side I couldn't really call it flat and just wanted some clarification. I appreciate the help, you're always so quick with a good response. I always thought I wanted the oil level in the middle of that little window, I can fill it up the rest of the way in the morning, that bubble idea sounds like a good one.

 

I can clairfy that you have the filter oriented correctly and the spring in the right place. The spring presses on the filter so it seals against the crankcase.
By flat side Fitz is talking about the filter body, and not the gaskets. One side is flat, the other is concave (dished). The Concave side is where the spring rests.

There are marks cast into the clutch cover next to the sight glass. A set of upper marks and a set of lower marks. So long as the oil is between those marks it is safe to run the engine (just like on a dipstick), but when the crankcase is filled with the correct amount of oil (2500 cc) it will be at the top mark. Remember that aircoled bikes really need sufficient oil volume in order to stay cool.

 

I've never actually seen any of these cartridge filters in person or online without their little gaskets on them, I suppose the one side would be flat. That makes sense now. Feel a bit like an idiot now, but then again this is my first not-a-spin-on oil filter job. We all have to learn somewhere. Thanks to you and the other great minds on this site, the midnight maxim is really cleaning up nicely, showing its true colors for the first time in who knows how long. Thank you.

 

if it is not on tight or right
you will know, it will spew oil everywhere