Good luck with the show Jennie. They seem quite unusual classes, I've seen pansies displayed in small vases or bowls & also where there are a number of them displayed with the heads set on top of a box with the stems poked into it so it looks like a picture, if you see what I mean. No idea on honeysuckles or nasturtiums, I imagine nasturtiums would be difficult to display in a vase as they tend to trail? Bet Nick or someone will be able to advise you. Enjoy the show.