Hi Kombowz,
You don't have to do that, but thanks for the support!
Yeah, creating your own animations is possible, but once again, only in Unity version, unfortunately.
You won't be able to export the animation back into the standalone version. But if you are already using Unity, there is no reason to use the Standalone version. As it is exactly the same tool, only run within Unity, and with few extra features. You can still export to PNG even using the Unity version.