use the staircase in the first image as the base do not change the layout proportions railing newel posts treads risers walls finishes or overall design update the balusters only replace all existing balusters with black metal u shaped balusters that match the style shown in the second image the balusters should be slender matte black and feature a smooth consistent u shaped curve at the top maintain the exact spacing alignment and quantity of the current balusters so the overall rhythm and layout remain unchanged do not modify anything else the result should look identical to the original staircase with the only change being the replacement of the balusters with the u shaped design
