Can I just say: this is amazing. It takes me fifteen minutes just to place a sword in a display box, and then it's crooked. How do you do this? Very nice work!
Well something like an elven sword, you could probably pop in there no trouble, pretty sure they have a nice firm grip you can just straighten the sword up against something and pop it in the case no problems. Something like an iron sword or a Dwarven one that hangs from the handle and waves all over the place while you move is not so easy. Line your bit of trouble up against the side of the display case at about a level where you want it, then slowly slide it along so it is level when it falls in the case, carefully line it up where you want it and then gently lower it in and let go. Hopefully it stays there and does not slide. If you have to try again you need to lift it and position the point first then rotate it with the handle so it is straight and try lowering it.
Or you can just give up trying to get it straight and cheat. Once you have it in the case in roughly the right spot, or even not, drop a small gem like an amethyst on the floor, pick it up and use it to gently nudge your weapon to where you actually want it. Be careful, your little gem is likely to flip your weapon out of the display case if you get too enthusiastic.
Obviously some demented game designer thought it was a good idea to have objects that wave around or tip upside down. A fixed grip on weapons, herbs, potions and just about anything else makes it easier to actually put it some where. Some things have a fixed grip, most do not. You get the hang of it, potions, crockery, containers, food and most weapons are easy enough to manipulate, but trying to put some lavender in a basket is likely to to drive you nuts. Obviously some developer was putting tundra cotton somewhere by hand and made sure that had a fixed grip, as do a lot of the other flowers and ingredients, but not the lavender. You have to be cunning to get the lavender in something the right way up, you have to balance it right way up over something bigger that you have placed next to your container, and then tip it in. A lot of trouble just to arrange a bit of lavender.
When I first got Breezehome last year the first thing I started was home decorating, it did not take long to work out it was not going to be as easy as it was in Oblivion. I have to admit, it defeated me, I did the potions room and put some potions on the shelves near the door, some weapons on the table and gave up. While the potion bottles proved exhausting (and they were the right way up at that point), it was actually trying to put a wooden plate on the potions table with a knife on top of it that did me in. In the end only the knife was there, I gave up on the plate, stalked off and lost interest in home decorating.
Each patch that came out, I would again try home decorating out to see if it had improved, strangely enough it was when everything suddenly turned upside down that I started to gain some interest. Once I got over the shock of my potion bottles suddenly hanging wrong way up. But still it was too fiddly for most things, I did most of Honeyside and lost interest, it was the tiny potions bottles that did me in, could not put any of them on display and the skooma bottles had me in fits.
At some point after that a patch gave most objects a cushioning effect that would make them settle better and not bounce, they seemed easier to place as well, and would stick easier, still it was too hard, I did a bit around Hjerim and gave up.
It was only with Hearthfire my enthusiasm actually fired up, there seemed to have been more improvements, and finally you could actually not only put your skooma on display, but actually get it to line up. I could think of a lot of improvements I would like to still see, but at least now home decorating is actually more fun, and less frustration. Now if only they would actually give us more homes that are set up like a player home and does not respawn all the junk if we are away for ten days. Why give us a home building DLC and then deny us the chance to really decorate them as we want to.