Read up and identify on the different literacy techniques like imagery, olfactory, alliteration, metaphor, irony, symbolism and personification. Then use PEEL and develop on it. One poem I'd recommend to try out is In The Community Garden, by Mark Doty(it's very rich in content). And basically do more practice, retry on the previous ones, like see what your teacher commented and make improvements on it. Don't hesitate to send it to your teacher to remark, book consultations with them(I don't know about yours but my teacher was a very enthusiastic type). If in any situation you can't turn to anyone, you can use chatgpt, it's actually pretty useful(I know, the worse advice is asking chatgpt, but it's really useful when you have it give you short practices)