The materials you require are -

Brushes -
3/4" (19 mm) Simply Painting Goathair Brush
Simply Painting Nylon Rigger Brush
Sheet 7" x 10" Simply Painting Watercolour Paper
Paint
Cobalt Blue
Lemon Yellow
Raw Sienna
Burnt Umber
Simply Painting White Gouache.
Palette
Cloths
Large container for holding water
Pencil
Ruler, Tape
Stiff board to affix paper to