These water soluble crayons and pencils were spritzed with water rather than swiped with a wet brush.
Acrylic is a thick, polymer-based paint that comes in tubes, bottles, or jars. It can come as a thick product or fluid. Price also affects quality. Colours can be very opaque to very transparent. Acrylics can imitate tempra, oil, and encaustic. Full strength yields a very plastic like finish. It can be thinned with water or an acrylic medium. You can also mix the paint with gels or glazes that give different sheens. (glossy, satin, matte) It darkens as it drys but does not bleed once dry. Acrylics should be stirred rather than shaken and brushes need to be cleaned quickly and thoroughly with soapy water.
At this point in my journey this is pretty much theory and I am talking mostly to myself as I try to understand the different products. I luv the effect of the watercolours but I'm horrified at some of the puddles. The acrylics are kind of 'in your face' when you mess up. I do like the crayons and pencils for their control but large areas of background are slower and not as spontaneous in their execution.
Something to remember is nothing is every really final as more layers can be applied. AND, this is a background. Next will be adding layers to create interest and depth.
The 'what if's...' are pretty staggering!