Watercolours often don’t need much in the way of supplies. If you’re a novice, start with the basics and gradually add more equipment – and more costly paints – as your painting skills improve. Infinity Painting offers excellent info on this.
Acrylics are easier to manipulate, according to most artists. When you paint something, the paint adheres to the surface. Watercolours, on the other hand, make it more difficult to monitor where the paint goes. Watercolour paints have a tendency to run and mix together, giving paintings a less natural appearance. Stick with acrylics if you want crisp definitions and lines. Choose watercolours if you want your paintings to appear more ethereal, cloudy, and less realistic.
Acrylics are very simple to work with and are often recommended to beginners. Because of their fluidity and the difficulty of covering errors and retouching parts of your drawing, watercolours require a little more practise to master.Keep in mind that certain paints contain primer as well, but they are more expensive. For those who don’t want to buy both or paint the extra coat, this may be an option. In general, you should consider if the surface you’re painting has any bleed-through potential. Unless the original colour was already white, it’s better to add primer before adding a light-coloured paint like white or a pale colour. If there are any water or other stains, primer will be needed to prevent bleed through. Another benefit of primer is that it improves the adhesion of the paint to the surface, resulting in better coverage. To put it another way, using a primer first will help the paint cover smoother, which means you won’t need as much paint.
So, while there is no one-size-fits-all approach to painting, there are techniques that can help you work faster and produce more professional results. Let’s just say that the cross-hatching method isn’t the most efficient.