Easy... or should I say tricky to put back together
Main beam, twist off backing to reveal the inner. Twist off small backing (note direction). The bulb is held by this, replace and fit back (tricky). Fit main backing back on.... Repeat on the other side.
High beam, pull off rubber backing. Stick your head right in so you can see retaining clip / connection. Pull off connection, Unclip clip and lift up, remove bulb ( note position ). Refit bulb, refit clip refit connection and lastly rubber backing...
Hope this helps
Martininwillerby