PLEAS HELP I need advice -
 

I need to sew a quilt top with two different fabric's. One is a tree print that will meet a night sky print. My problem is I need to cut the tree print like hills or a roller coaster up & down to look like hills & valleys. How would you sew it onto the sky fabric? Would you hand turn & sew it? I hope this makes sense. Thanks for any & all advice.

If I understand your question, you will be cutting and sewing curves. I always hand applique curved piecing, as I'm not as accurate with machine stitching curved piecing.

You can turn and stitch the edge or you can add fusible (like wonder under, heat&bond lite, or misty fuse ) then fuse it on and stitch the edge or you can Even use basting glue or Elmer's glue. Visit the "Sewing with Nancy" website, Nancy Zieman does a lot of landscape quilting, has published books on it and has tutorials. There are probably many u tube tutorials on techniques too- just search. " landscape quilting "

I would lay both piece of fabric right side up with the sky above the trees. Overlap the edges by the amount that you think will accommodate the ups and downs of your hills -- hills on top. Then either use a template or free-hand your hills and valley cutting through both pieces of fabric -- you want gentle curves to make it easier to sew the two pieces together. Put the pieces right sides together and sew carefully -- you may have to stretch the curves a bit to make them fit. I then trim the curves slightly with pinking sheers make them lie flat.

I'd applique it on.

I wish you could post a photo. Not sure what you are asking.