How to Paint an Adorable Chick for Easter Using Watercolor

I’m an artist who also happens to be studying chemical engineering. The topic of paint formation intruiged me, so I decided to form my own watercolors and fiddle around with composition to achieve an artist quality watercolor paint at a decent price. And here are the general ingredients that I used so far:
-pigment
-Arabic gum powder (Main binder)
-glycerin (plasticizer, surfactant, wetting agent)
-polyethylene glycol (surfactant, dispersant??!!

I’m not sure about this one) -calcium carbonate (extender, filler) -dextrin (thickner) – styrene acrylic acid, optional copolymer) While I formed some decent samples of watercolor paint, there are a lot of things that I couldn’t quite understand and couldn’t find an answer on the Internet. So I’ll leave some of them here and if anyone could answer any of these question I’d deeply appreciate it.

1. As for pigment, I’ve seen a lot mixed percentages from different researches and websites. Some are just around 5% for red pigments, others say it must me be above 10%. I assume the later is right since when I made a sample of red paint with 6% weight/weight it gave a very pale red, but also I might haven’t been able to disperse the pigment thoroughly into the binder due to lack of equipment. I also tried another vermillion sample with 17% wt/wt and it was vibrant and beautiful, but I don’t want to overload the paint with pigment for no reason. So, does anyone know what the perfect % of pigment should hover around ?

2. As for different pigment colors and types we use different percentages right? For instance, we use way more pigment if the pigment is inorganic. Also for same pigment type we use different % for different colors. For instance, according to handprint.com, we use around 10%~20% for red organic pigments, while we use 40%~50% for blue organic pigments. But the later seemed rather unpractical since the mixture clogged way to fast and I wasn’t able to thoroughly mix it.

3. if the dried Paint on paper lifts off the paper easily, this means there is not enough binder?

4. Is it necessary to add filler Calcium Carbonate or is it Just to decrease the cost?

5. Does the type of dexterin matters ? there are white, yellow , and brown dextrin. with each being more soluble and less viscous than the previous. I only found white dextrin locally.

6. Is using the styrene acrylic acid any good in the mixture? I know it’s used in Printing inks to give good tensile properties. So added very little amount (around 1%-4 %).

7. Could Carboxylmethyl cellulose be used instead of dextrin? I know that they should have very similar properties but I Just wait to confirm that.