bloomhjelm not a florist but have been studying on my own for a few years. I'd say that more space (just negative space, foliage, or maybe even fillers) between the focal flowers would be great so each can be admired easily. You could likely have more impact using even fewer flowers. One thing that helped me start is to really look closely at the work of florists I admire - to study each little part of what they put together. One of my favorite designers to follow on Instagram is TJ McGrath. He focuses a lot on sustainable mechanics and many of his reels show him making arrangements from the beginning including getting the vessel ready before putting anything in. Also for really studying the color aspect of floral design, Ariella Chezar is amazing. I have several of her books and they include step by step pictures.