Big love - Fleetwood Mac

I want to learn it but i am RUBBISH at picking (i strum happily in the background), been trying to learn with a metronome, slowing it down, breaking it up, looked at picking techniques but to no avail

Any ideas on how to best approach learning this awesome picking song when i can't pick for shit?

and yeah practice practice practice ...

Leave it alone for a while maybe? Focus on getting the technique down at it's basic level and work your way up towards that.
I'm not familiar with the song, but Lindsey Buckingham fingerpicks. You'd probably have a hell of a time trying to use a standard pick.
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