I normally cut a length of Tamiya tape to the required width, and slightly longer than needed, then run it between finger and thumb a couple of times, to remove some of the 'tackiness' - even though Kabuti-type tape is already relatively 'low tack'.
To apply the tape, I stick the relevant edge to the end of the scalpel blade, and then position this edge, tamp it down lightly, and remove the scalpel, before positioning the rest of the tape in stages. This allows for more accurate placement (especially with my knackered hands, where the right one works around 80%, and the left only about 25%, with extended, stiff fingers!), and prevents, or at least mimimises, the chances of the tape sticking to my extended, stiff, non-articulating digits!
Once in place, any excess can be trimmed off with the scalpel, and any creases burnished down as required.
On curved surfaces, such as the leading edges of the Ventura's fins, I might, depending on dexterity and ease of access, place the tape wider than required and then, having marked the curve, cut the tape in situ, using the point of a new scalpel blade.