When I started putting together our first garden areas in our blank slate of a yard I always second guessed myself. Every planting was met with the oncoming thought "is this going to work like I want it to?" or "does this look right?" Ideas flow freely from my mind all the time and I always try to imagine what they will turn out like when everything is finished but there have always been those nagging thoughts. After several years of gardening I still have those thoughts that eat away at my confidence each time I do something new in the garden. Sometimes I'll stare at a plant that I just bought and place it in 4-5 different locations before settling on a final spot for the plant. I can't tell you how many times I've wondered what my neighbors think of my garden. I'm always my own worst critic. But I've learned a little something over the years. It doesn't matter. It really doesn't matter. There isn't anything in the garden that can't be changed or fixed to fit another idea or plan. Any "mistake" can be rectified. Every plant planted in the wrong location can be moved or replaced at any time! I can't tell you how many plants I've moved over the years. I moved a willow tree three times, a maple at least twice and many perennials have migrated to different locations. I guess that's another reason why I like to propagate the plants - so I can just plant a new one where I want it!
I'm finding that as I garden more the idea of something being "right" or "wrong" in the garden just isn't true. "Right" and "wrong" are matters of personal taste and what looks right to one person might be just plain wrong to another. It's up to the gardener. If you happen to be a new gardener who has had similar thoughts don't worry so much. Whether it's wrong or right, it's all up to you, the gardener!