As you can see by the other posts, there are many ways to applique. They all work; it is just a matter of preference in the look you want and the durability.
I am presently doing that block from Eleanor Burns book and I don't always use interfacing. But, if the fabric is thin and you will get shadowing from a darker fabric it is good to block that. I am turning all my edges in for this quilt. I have not done any embellishments yet because this is for a 5 yr old who has 5 younger siblings and we don't want buttons, bows or other loose things for a baby's mouth.
Just a comment: I went to JoAnn's yesterday to get some interfacing. I wanted white featherweight iron on. Their black featherweight was just right. Oh me, I wanted white. But, their white heavyweight was thinner and more flexible than their white featherweight. Somehow, I think the Pellon company got their labels mixed up. And, all my local JoAnn's had was the Pellon brand. I bought a few yards because it was 50% off and I will use it. But, I also have a 50% coupon for Hancock's and will try them this weekend.
some of the blocks, there are a lot more done now.
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