Complex sentence: Another difference between oil and acrylic paints is the versatility offered by acrylic paints: acrylic is very useful in mixed media, allowing use of pastel (oil & chalk), charcoal, pen, etc. on top of the dried acrylic painted surface.
Split into simpler sentences: Another difference between oil and acrylic paints is the versatility offered by acrylic paints. Acrylics are very useful in mixed media, allowing the use of pastel (oil & chalk), charcoal and pen (among others) on top of the dried acrylic painted surface.