Since 2018 I have devoted myself full-time to painting Napoleonics in our favorite scale and with gratitude to the many people who have helped share their skills I may have learned a few things that might be of assistance, particularly to those just starting out or new to painting in 1/72 scale.
#1) Have an area set up with good lighting and comfortable seating for painting. A proper rest for your back and arms will make itself known to you very quickly.
#2) You can only paint as good as your brush and paints are. You will never paint details well unless you have a brush suited to the purpose.
#3) Paint is not just paint. What I mean is using acrylics we have the option to use thinner or water. They behave differently on your brush and thinner will often leave a sheen that using water will not. Older paints will be thick and require a thinning medium but if used without mixing will leave lumps and blobs you probably don't want.
#4) Test your brush and paint before applying. Excess paint or watery paint can ruin work you've already done. Make sure by my making test streaks on paper towel the paint comes off the brush like you want it to. For painting clean lines this is a must.
#5) You can never clean your brush too often. Do it regularly and you will be happier with your results.
#6) Make sure your figures are washed and cleaned of any flash or mold lines you don't want. For really top notch figures invest as much time as needed before that brush even comes out.
#7) Priming matters especially on metals and very soft plastics. Just make sure you don't apply it so thickly you lose detail - this can happen very easily using spray cans.
#8) Have several references for historical units. Lots of illustrations and painted figures out that are not using correct color schemes.
#9) Intense work will wear your eyes out. I have spent weeks painting units and declared them finished only to look through a camera lens and notice a multitude of things I had missed or done poorly. Allow yourself time away so you can view with fresh eyes (and renewed patience).
#10) Because 1/72 scale is so small colors need to be a bit brighter to show up well. Contrast between adjoining colors is critical to making a figure "pop". This is where blacklining comes in, leaving solid black lines between areas helps each color to stand out better. If overdone this looks bad if photographed closely. You must decide what distance you want your figures to look best at and settle for that. What looks best at 6" is very different from what looks good at 6'.
I was a photorealist painter for years before turning to models so some aspects of the hobby did not come naturally to me. Exaggerated colors and blacklining are still topics where my inner debate yet rages on.
If this helps anyone mission accomplished. I suppose I should have made #1 enjoy yourself. Painting can be very relaxing and satisfying as a hobby. Don't expect your early work to look like what you might see on forums where masters who have spent decades perfecting their styles is displayed. I was happy with my first units but I find them laughable these days. It's all about improving as you go and with consistent effort you will. Paint with joy in your heart because you are creating and the troubles of the world will fade away while you work.
Cheers,
Bessiere