Move to your left... that little white line is not some special place for you.
If the road is not big enough to share, those behind you will have to learn proper passing techniques.
Now before someone utters "I didn't see you..." make sure you are well visible... wear bright clothing, use bright blinkies and maybe even use a flag.
You are riding on what appears to be country lane... traffic is not too heavy, so there is room to pass you.