It would be much easier to see what you did if you posted your code instead of an image of your code.
Looking at your derivations, it looks like you didn't compute the transfer functions correctly. For example, FHG8 should be:
FHG8 = G6*G7 / (1 + G6*G7*G8) compare this denominator to yours.
Here is one approach to get the proper result:
G1 = tf(1,[.01 1]);
G2 = tf([0.17 1],[0.085 0]);
G3 = G1;
G4 = tf([0.15 1],[0.051 0]);
G5 = tf(70,[0.0067 1]);
G6 = tf(0.21,[0.15 1]);
G7 = tf(130,[1 0]);
G8 = tf(0.212);
G9 = tf(0.1,[0.01 1]);
G10 = tf(0.0044,[0.01 1]);
H1 = feedback(G6*G7,G8);
H2 = feedback(G4*G5*H1,G9*inv(G7));
H3 = feedback(G2*G3*H2,G10);
H4 = G1*H3;
step(H4,0:.01:10)
If you want to do transfer function algebra, which isn't recommended, to compare to your derivation:
F1 = minreal(G6*G7/(1 + G6*G7*G8));
F2 = minreal(G4*G5*F1/(1 + G4*G5*F1*G9*inv(G7)));
F3 = minreal(G2*G3*F2/(1 + G2*G3*F2*G10));
F4 = G1*F3;
step(F4,0:.01:10)