As the bed is quite tight to the house, shrubs will need to hang over the front of the wall in order to have room enough to develop a proper size. Hanging over will look fine, though. At the left corner, a groundcover or low trailing shrub could look nice. Below the windows the shrubs should be something easy to keep at 3' ht. The heavenly bamboo is not going to look nice below the window. It would be best if you find another location for it where it could grow to natural size. It would be better to have dome shaped shrubs below the windows. Seasonal color could go at either side of the stoop and whatever you have growing at the right side now could be used to fill in the leftover spaces.