How do I make my front porch look like its finished?

I HAVE AVERY OLD HOUSE WITH A CONCRETE PORCH THAT HAS PULLED AWAY FROM THE HOUSE AND AFTER PAINTING THE PORCH I CANNOT FIGURE HOW TO COVERUP THE 2INCH WITH FR OM THE SIDING TO THE PORCH. I CAN,T USE CONCRETE IS NOT SOLIED, THE PORCH IS ABOUT THREE FEET HIGH. ANN
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