Down Syndrome

How can I help my down syndrome child express herself

My daughter was born with Down Syndrome and she is now 5. She currently goes to a normal primary school and she seems quite happy but I am not sure I really know. She can express herself in her own way even though she does not talk. We communicate well together but I sometimes feel that there must be other ways that I can find where she can express how she is feeling more easily. She loves art and music and is quite good at both.