If you prune the top bud it will look more bushy. 👍 I found that it's best to leave as much growth as possible in the first year after planting because HT roses establish roots over 2-3 years and if you prune it too hard it will look really bare. They really start to flower properly in their 3 year (depends if you bought bareroot or potted, potted might start to flower properly quicker). I find that you need to be really patient with roses but they get better with age. Like peonies.