Any painter or crafter knows how cool buying supplies is, it's definitely one of my favorite activities! Every time I travel I make sure I hit the best arts and crafts shop in town. After years of painting you pretty much know what works best for you, but it's also really fun to try at least one new item, this is how you end up discovering your favorite supplies!
I get asked a bunch of technical questions on Instagram, like "how did you make the white lines?", "what kind of paper do you use?", how did you make your lines so fine?", etc. Some of these questions are hard to answer because each artists developed their own style and way of painting, fine lines are just easier when you practice practice practice! But I can make a personal list of my favorite painting supplies :)
Watercolor
Ok, so I've painted with acrylics and gauche in the past, but my personal favorite is definitely watercolor. It's very practical, dries beautifully and creates amazing texture. I usually mix my pan sets with concentrated watercolor. What I am using now is Sennelier, Winsor & Newton and Dr Ph Martins. Winsor & Newton (Cotman) is great for staring out because it's not as expensive as other professional brands. I've heard schmincke watercolors are amazing too, I will be ordering those soon!