1 lead primed linen panels size 11"x 14", 12" x 16", 14" x 18", or 16" x 20" if you're feeling ambitious.
Rosemary and Co brushes are my favorite, but you could also use Trekell, or your favorite brand. I recommend sable, but synthetic sable would work too. I use a variety of small round brushes in sizes 1 – 8. I recommend having 6-10 brushes. One or two flats or filberts could be helpful as well.
The Rosemary Series 99 401, 99, 301
You can try a limited palette if you like, with cad red light, cad yellow, ultramine blue, white, and black, but if you want to know what's on my palette, I'll list all the colors below. It can be really helpful to have a couple earth tones burnt sienna and raw umber when creating skin tones.
Cadmium Red Light
Leaf Green (Richeson)
Oleogel by Natural Pigments
Paper towels - I prefer Viva
Mahl Stick - this is a fancy one, but a wooden dowel from any craft store would work too.
Palette - wooden or plastic, whatever you prefer