I am throwing my own as well with the father. I also don't have anyone to throw me one so we decided to just do it ourselves.
You can definitely throw your own shower. I planned mine by myself and loved it.
Me and the father to be is throwing our own baby shower because I do not have anyone dependable to help throw me one. Some people and family members will help but will they be dependable. You can plan your own babyshower and have fun together planning it.
With my first baby I had to plan 2 showers myself because my families live so far apart no one was willing to travel. At least that way you can make it what you want