I usually start with some spider fingers (twice on a set of frets that's "easy" then twice on the next set up). I also pluck the strings above and below the note I'm fretting to make sure that I'm only fretting one note. Use alternate picking.

Next I'll run through a few riffs to get my fingers moving in a pattern and tempo.

Run through a few chords (and alternate fingerings of chords) at a tempo that's comfortable.

Give my fingers a break by clapping or tapping to a metronome in whatever strum pattern I'm working on.

Stretch my fingers and practice strumming.

I'm working on trying to become a rhythm guitarist, if I was working to be a lead I'd probably practice riffs instead of strumming.

Hope that helps.