Painting roses can be more difficult than it seems at first. There are so many petals and so many details you need to pay attention to. This is not to say that as a beginner, you cannot master the art of painting a watercolour rose. You just need to know how to go about it.
Most beginners want to begin with painting a watercolour rose, but they don’t get one thing right: the white spaces. Getting the white spaces between the petals right makes all the difference. Once you fit the white spaces in between the petals, you can work on getting the centre darker than the outer petals.
It’s okay if you don’t get it right the first time; every beginner makes mistakes, which is part of the process.