Allright, thats the promising start. Now, you got to get better backingtracks to improv for, that one was horrible and it affect also your playing if you are not secure or in the bag how you say? to the song you improvisate for.
Try this m8,
Make sure your guitar is on tune, and let it flow man.
A minor pentatonic is good starting point in this one.
Keep on practising, from that point, you have excellent change to become very good at young age.