You can draw a hibiscus flower with whatever you already have, but the best results come from tools that let you revise lightly and shade smoothly. A standard pencil set (HB and 2B are a good start) helps you map shapes without heavy lines. A soft eraser or kneaded eraser is ideal for lifting pencil marks when you adjust petal angles.
If you plan to add color, colored pencils or markers both work. Colored pencil gives you more control for the subtle gradients in the petals—especially the darker throat and lighter edges. Markers can look bold quickly, but they can blur petal texture if you press too hard.
For practice, keep one sheet dedicated to “structure sketches.” Don’t worry about finishing. Just repeat the same outline a few times until the flower’s proportions feel familiar.