Hi Ernie: your scar looks better than mine did !(retrosigmoid also), you also LOOK alot better than I did (no facial paraylisis, YEAH ! ! ! ! !).
You will be exhausted for weeks, it'll get better over the months (it's a weird thing that happens from exposing the brain to air - so says my neurosurgeon, who I have complete faith in). Take naps whenever your body tells you to.
Little by little you'll walk more, do chores around the house, etc.
I was able to drive after 3 weeks post op (out of necessity), I found it easier to drive than walk !
Headaches were horrendous for me for the first 3 weeks, then slowly dissipated over the next 2 months.
You may also find your appetite has diminished - this is normal, it will (unfortunately for us chubbies - not you!) eventually pick up.
Continued healing my friend, always good thoughts, Nancy