Watch the Colors for Kicks online guitar lesson by Brad Carlton from Chord Studies: Evolving Progressions Vol. 1
Still in the key of E here, this time doing a I - ♭VII - vi - V progression. Again keep in mind that the D is not technically in the key of E, it is a color we are borrowing from another scale. Between the E and D your first finger is a guide finger. Notice that when you move from the D to the C♯m, you'll need to kick your thumb around the back of the neck to facilitate the change.