Acrylic paint is a relatively new medium for me. It bears some similarity to oil paint except it is water based and dries quickly. Oil paint takes weeks to months to dry completely while acrylic takes minutes to hours. The trade off comes with the surface. With oil paint the surface is easier to control and allows for more surface versatility. Each medium has its strengths an weaknesses.
I started working on small paintings in acrylic because they offer me the opportunity to work more quickly on a variety of images. I have a sketch book in which I draw a lot of pictures and acrylic paint offered a new way to make those drawings into finished paintings.
Stacking is also important with these 8"x10" paintings. Stacking comes from the Impressionists. Size is important when it comes to painting and the Impressionists were making small paintings compared to their more traditional contemporaries. To make up for this Impressionist paintings would be hung in clusters two or three deep by two or three tall. This stacking leads to a visual impact that can keep up with the impact of larger paintings. I like the way that the variety of images play of off one and other.