I have a trouble with machine applique. I bought a new machine Brother Computerised CS100t with 10 stitch functions. I want to make a baby quilt and make my own appliques. I was testing it without batting, just with 2 pieces of cloth. The zig-zag stitch worked fine with open toe transparent foot. When it comes to applique the curves, I turn the cloth as I go on stitching.But the cloth is getting gathered up under the stitch and it looks bad. The bottom fabric gets wrinkled up due to this.

Any idea how to solve this? Can I remove the dog feed? Should I use free-motion quilt or walker foot for this?

Thanks