Impending Doom

Hi all, so today I have been playing about creating my own music using the drum machine feature on my Digitech RP250 pedal. Improvising is one of my favourite things to do on guitar because it allows me to express myself in ways playing other people music never does. Plus its not as demoralising the i get something wrong.
This is by no means finished and I'm not too keen on the crunchy voice of my guitar, I think it needs something a little heavier and darker but this is what I have so far. I have also written the tab for this so I can remember where I am for next time.
Obviously there is a lot of work for me to do here but it will be  a welcome distraction for when I am finding material given to me by my tutor either too difficult or a little monotonous.