Develop a musical piece using the given motif and adhere to the outlined structure.
X:1
L:1/8
M:4/4
K:F
['D3 D']  
X:1
L:1/8
M:4/4
K:F
 (FD) | C2 (CD) F2 GA | c3 B A2 FG | A2 F2 D3 D | D6 (FD) | C3 D F2 (GA) | c3 B A2 FG | A F3 D3 D | 
 D6 AB | c3 c d2 (cA) | c2 (cB) A2 C2 | D2 F2 B2 A2 | G6 (FD) | C3 D F2 (GA) | c2 (cB) A2 (FG) | 
 A F- F2 D3 D | D4 z2 ||  