Binding an ice cream cone border can be a tedious chore.
I recommend patience if you have never done this before!
When working with this type of border there is no race to the finish.
What you will need:
A walking foot
2 1/2" bias binding
Best to have a bias binding due to a bias cut having more flexibility
A thin pointer or something that can help push away the bulk of the binding for when you pivot on the turns.
1/4" seams on your binding (if you can)
Most quilts that have an ice cream cone border have rounded corners instead of pointed ones. I recommend to start your binding on one of those corners. It will not be an easy task if this is your first time working with a curved border but it is much easier to start there on the rounded corner than on the tight curves of the ice cream cones.
Once you get to your first ice cream cone lift your walking foot
Pivot the quilt to your left, take your binding and pivot it to your right.
Push away any bulk under the walking foot with pointer.
*Not everything will push out of the way and it will not be an easy task, its okay!
Bring quilt slightly to your right to meet up with your binding. Lower your walking foot. Start stitching
Guide the binding and quilt at the same time while following the curve of the ice cream cone.
On occasion you may have to stop and pivot the quilt/binding during the curve.
This will help relieve tension and bulkiness. Plus giving your fingers a rest too.
When you are done with the first ice cream cone your stopping point should be at the spacers in between each ice cream cone.
Lift your walking foot.
Pivot and repeat the process all over again!
As always check your work it see if everything passed though all right.
Pinching can accrue due to all the bulkiness in the corners.
The photo below shows that happens when you can not get all the bulkiness out of the way of your walking foot.
This is how your corners should turn out.
Once you have your binding turned over, I found it more easier to handle and to shape the curves if you hand stitch the binding on to the back.
Hope this helps!