I am attempting to make a small branch with Wilton gum paste cherry blossoms to decorate a japanese lantern groom's cake in a week and a half. Any pointers on how to make it and what would be best and easiest to use for the branch?

You can also use a wire for support (make sure it doesn't get eaten).

i make branches out of chocolate clay.
if you need it to stand out (not attached to cake), small branches may not need to be supported if they are not extending too far and have been allowed to dry for a day or so. however, if there is too much of the branch extending or the branch is large and not attached to cake, it will need to be supported by some means.