Nice choice of herbs and minerals.
First and foremost, if you want to do this the way mojo bags were intended...You need to talk to each herb. You're essentially waking them up and telling them what it is you want them to do (each herb can be used for multiple purposes, so we wake them up and talk to them so they know what it is they need to do. You just want them to know to work which association).
Because you are wanting to reconcile, you'd use two loadestones (a male and female). Make sure to feed them either magnetic sand, Hoyt's cologne, or whiskey.
If you are adding the picture of the male, depending on what the oil is..I'd add a tiny drop to his forehead (bend over or come to me oil would be great to "get in his head").
You can use red velvet if you want. You can use cotton if you want. The flannel was popular due to what people had available at the time. Because we have the luxury of having more colors and fabrics now, you can use whatever.
The dimensions do not matter. You want it big enough to contain everything and small enough to hide under your cloths. Mojo bags should be kept on you and out of sight. Typically you would pin it to the inside of your pants.
I would suggest putting the oil on the bag at the very bottom and running it across the edge. When you "feed" it, you would do the same.
Also, as a suggestion...I'd think about removing the cloves and adding a pinch of sugar to sweeten it all up. There are certain numbers we use in Conjure so if you add a picture and switch out the cloves with sugar, it would give you 9 which is pretty normal for mojo bags (the other would be 7).
Just remember to pray over it and feed it and you should be good to go.