Judy
I pin all my quilts on the carpet floor surface and I use lots of pins. Taping the back down has never worked for me,'I got the same results as youre talking about'. So I started pinning my backs down into the carpet with special pins for this. I pin about every 3 inches. The more you pin the better. I pin from the middle out on all four sides,smothing out any wrinkles as I'm pinning.
make sure your backing is 3-4 inches wider than your complete top on all four sides.
Pin your backing down into the carpet with pins every 3-4 inches on all four sides
lay batting on top and cut exact to the backing and smotth out all wrinkles.
Lay your top on the batting in the center of it all,sit in the middle of the quilt and pin every three inches apart moving from center out on all four sides smoothing wrinkles out taunt while pinning.
Now thats depending on what size quilt you are making. You would do it in the same manner but a baby quilt you wouldn't need to sit in the middle to pin, You would be able to reach the areas!
This is how I pin my quilts and I have had great results. For some people doing it from tables is much easier- standing in stead of sitting,its easier for me this way then Pinning them on tables- I couldn't stand that long or reaching over the table. I think they have clamps for doing this method on tables now-I'm not sure.
If you don't want to add a binding you can either turn the hem inside under about 1/2 inch and pin and do a stay stitch around the edge or you can turn over the complete edges to 1/2 inch twice then pin and sew along all four sides.
With amy bindings I don't pin but I usually sew my quilt edges 1/4 inch around complete quilt before adding my binding ,this helps or I will sew the raw edges.
Good Luck with your quilt. Let us know how its all working out for you.
Kathy