A great exercise for improving your speed and syncing up your hands
My guitar is in Drop D for this video but you can do this in standard or any tuning
This might help too here is the pattern
5-6-7-8 9-8-7-6-5
5-6-7-8 9-8-7-6
5-6-7-8 11-10-9-8-7-8-9-10-9-8-7-6
5-6-7-8-9-8-7-6-7-8-9-10 11-10-9-8
7-8-9-10 11-10-9-8
7-8-9-10 11-10-9-8
Again looks like a lot but it is so very easy just take it slow at first to memorize it