how to describe the residual plots.. plz help

#1
Hello everyone...

can you guys help me describe the residual plot.. whether it shows some sort of pattern of not and also whether it shows independence or dependence....

i've upload few images of the residual plots..

just guide me with the steps.. how to analyze and on what basis should i say that the model is not fitted Least Square is good behaved model or bad behaved model...

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also if R-square is 93%, p-value of t-statistics is less then 0.05, P-P plot shows that it follows normal distribution but Residual plot shows pattern, so should i conclude that the fitted least square model is not a well behaved model....

thx....