I often recommend loose florals to beginner painters because they are simple in their construction and rely more on textures than detailed proportions and technique. I generally start by referencing a simple flower bouquet, to understand the general composition, and then taking whatever creative liberties that come to mind from there. Here is the process I recommend to achieve the look of a loose floral painting:

Allow White-Space

It is important to always be paying attention to where are you placing water on your page (see my previous post on Wet-Wet technique). You can create excellent contrast and texture by simply leaving small dry slivers between a few of your strokes. Before you make your first stroke, consider where you want the eye to be drawn to and focus your negative space there.

Poke in Depth

It is very easy to get a “rounded” look to your flowers by poking in pigment in the wet areas that should be shaded. This creates depth by color value instead of actually adding black. You can also use this technique to create some beautiful color transitions, for example, at the tips of the petals.