i just found it more challenging than the original but hopefully i'll get better
You will, it's just a matter of practice. It's good to have a go at songs, I've learnt a lot just by doing this, especially if you are working off Tab instead of trying to work it out yourself.
For me the key is practicing the fundamentals on a regular basis, i.e. put aside at least one night a week to practice scales, picking exercises etc, there's plenty of instructional material out there. Take your time when doing it, if you get it wrong, stop and repeat until you get it right, same applies to learning songs. It's amazing how quickly you improve and it inspires you to keep going with it.
Best of luck
