I noticed that this topic is more than a year old, but here are my two cents worth ..... throw away the balm and the tape! A leather friend of mine shared the templates he uses for fingersleeves for hand stitching. Here it is, in format ready to download and print.
Fingersleevecan30001.pdf
For the lefthand, just flip over the template ( mirror image). Not shown is the wrist strap, but that can be cut to size fit and attached with the appropriate rivets and snaps. Fit to the finger can be adjusted by the stitching line, don't make it too tight. For large hands, scale the template. The indexfinger's sleeve is attached with a snap so it can be removed when not needed. Here is the finished product.
Notice the flap on the sleeve of the littlefinger. This is used to push the needle obviating the need for thimbles and sewing palms. Heavy stitching would need something more robust though.
I finished a pair of these sleeves in under an hour using 3oz suede and it will probably lasts for years to come.
Fingersleevecan30001.pdf