its simple to draw a fire.....
Step 1use black background~!!!
and draw a rough shape of fire with yellow
Step 2now use orange ....try to make transperant ....50%....
and so at sides touch
Step 3cover inside with lighter orange
Step 4now use white ...transperancy level 30%....to 60 at centre
Step 5make sur you add blue ....might not have noticed.....you have blue colour on fire at close observation
Step 6now have black colour too at bottom
Step 7now draw flames....when drawing with candle please drawcandle first
Step 8now if you want can play with fire...while abstact drawing ...by using background colour(black)
so try drawing...if you made one please let me know