I am totally new to gardening and wonder just how to train a honeysuckle. I have it in a large pot on our deck with a 7' fan trellis against a wall of our house. I think my main question is, can I just cut vines at random until I have only the ones I wish to climb the trellis left? Also, once it reaches the height and shape I want which shouldn't take very long the way it is growing...can I just keep topping it off? Also, can the same be done with Clematis?

Thanks much for your input.