The Navel or Solar plexus, also known as the Third Chakra, is the seat of joy and generosity. 
Manipura comes from two Sanskrit words: mani meaning 'jewel' and pura meaning "city". Therefore, manipura literally means "city of jewels". 
Manipura is associated with the natural element fire and directly linked to our sense of self.
This chakra is a source of personal power and governs self-esteem, personal identity, individual will, and the power of transformation. The Manipura chakra also controls metabolism and digestion.
It is said The 3rd chakra is open and healthy when we experience self-confidence, a strong sense of purpose, self-motivation, strong digestion, .
Mental signs of blocked energy in the area of the 3rd chakra: low self-esteem, a victim’s mentality, neediness, lack of direction and motivation and on the physical level - digestion issues. 
In addition to drawing - some thoughts on working with the 3rd chakra. 
  • Behaviour and thoughts - humour, smile, generosity; 
  • Consume healthy food and not too much food;
  • Don’t drink icy drinks because this decreases digestive fire;
  • Active exercises because this energy centre is about the fire and heat. Yoga practice - back bands, twisting, strengthening the core muscles;
  • Concentration exercises - visually focusing on objects for 2-5 minutes, meditation.
The 3rd (Manipura) Chakra Yantra:
  • The energy of this chakra is masculine, solar, active. 
  • It is associated with the color yellow and has 10 lotus petals
  • Location (as the name suggests) around the naval area.
  • The symbol for manipura is a red triangle inside a yellow circle.