Some ties are a bit more sturdy so I don`t use stabilizer on them.
Them come the second tie prepared the same way as the first....I trim it the size I want then pin it to my middle tie as you can see in the photo. Then sew it and iron it open. I keep going till the muslin is coverd....I usually try and keep to 7 ties and/or pieces of ties. I trim them smaller at one end and a bit wider at the other so thy hold the tie shape....when the muslin is all covered I turn it to the back and make sure it still measures 10.5" as I trim.....I also serge the edges of the blocks....hope this all makes sense, thank you.