Here is a slip knot you can use to easily adjust the loop.
This mask is a bit faster to make because of the shorter tie.
It's also easy to put on and take off as well as more comfortable.
First a few time saving tricks.
The strips are half whatever the width of fabric,
so half the sewing time for ties.
Stitch long edges with a serger for speed.
Light gray thread goes with a lot of fabrics.
Make 2 pleats and hold with fingers instead of pinning.
Two pleats instead of 3 in same space is faster.
Why are 3 pleats needed anyway?
Place center of strip approximately in center of pleats
Still no pins saves time.
To find out how I stitch the ties
please see my other post entitled
How to Make a Knot that Slips
According to my research this is not the official slip knot.
However, the knot will slide along the other tie.
Bring the top tie around the back.
and under the other lower tie on the same side.
bring around front
and loop back through itself as you see above.
Tightened the knot trying to secure in the spot just below the mask.
Arrange the knot so the bottom tie will lay on top.
It just looks neater.
The knot should slip along the bottom tie.
On the left side, you do the same.
The top comes under the bottom.
and loops back over and through as above.
Arrange the knot so the bottom tie is on top.
You might want to cut off the excess and tie a knot at the end
so the slip knot doesn't slide totally off?
The loop stays snug, but isn't tight like elastic.
No long ties hanging around.
Quick fold up to stow away in purse or pocket if need.
This was mask number 510 for me.
Here are the directions for the first 300 or so I made.