You're having right fun with this 'Amateur Radio' malarkey Chris!
It's always bothersome trying to squeeze in an antenna into the limited space some of us face and often we have to make compromises. A compromise doesn't have to be as bad as you think though, you may not become the next DX king but can work out reasonable working conditions.
I always say, any antenna is better than no antenna!
Jeff has already pointed out your mistake of folding the antenna back on itself, that'll do you no good at all.
Craig has pointed out the sloper arrangement and the fact that Dipoles work better as an Inverted V.
A quick read of the following links may help explain it all better :-
Firstly, what happens if you bend a long-wire into an Inverted V,
[url=https://www.qsl.net/kk4obi/EFHW Inverted V.html]https://www.qsl.net/kk4obi/EFHW%20Inverted%20V.html[/url]
Doesn't look great does it?
Secondly, what happens if you bend a long-wire into an Inverted L,
[url=https://www.qsl.net/kk4obi/EFHW inverted L.html]https://www.qsl.net/kk4obi/EFHW%20inverted%20L.html[/url]
As Nick has pointed out you can get away with 'dog-legging' or bending the antenna to various degrees but you can't go too wild(!) You may also find yourself needing a suitable 'counterpoise' to make it all work effectively.
A look at the following YouTube video will show what can be achievable :-
There are various other experiments into folding antennas with varying degrees of success and places like YouTube are full of such examples.
I gave up on a longwire due to the fact that my front garden is as long as my back garden and unless I started draping antenna wire over the house no where was long enough! In the end I went for a dipole arrangement knowing that you can zig-zag dipoles to fit smaller spaces.
Info for that was here :-
[url=https://www.qsl.net/kk4obi/Center-fed ZigZag dipoles Horizontal.html]https://www.qsl.net/kk4obi/Center-fed%20ZigZag%20dipoles%20Horizontal.html[/url]
With that I now have dipoles zig-zagging my loft/attic space which is also a 'fan-dipole' arrangement giving me better access to different bands. It doesn't at all work too bad and at least gets me on the air.
Don't disparage or get frustrated......some Amateurs spend a life time working out and working with such compromises. It's all part of the fun
All the best mate,