Design a melodic composition using the outlined structure while keeping within the customary elements of the given genre.
'Ternary', 'Sectional: Verse/Chorus/Bridge'  
X:1
L:1/8
M:2/4
K:G
 dB gf/e/ | d^c e>d | AF dc/B/ | A^A BG | dB gf/e/ | d^d fe | de/d/ c/A/d | B/A/G g z :| 
[K:D] FA ed/c/ | df ed | ce ba/^g/ | ag ^de | FA ed/c/ | df ed | ce ba/^g/ | af d z || 
[K:C] EE/E/ EG | FD A2 | BA/G/ FE | AG ^DE | EE/E/ EG | FD A2 | BA/G/ FD | dc c z ||  