I would install solar panels on the roof, cover the concrete porch with wood, minimize the size of the stones leading to the stairs in the third picture, and replace the black walls with wood. -HSG modern 300 house in Vilnius by NG architects
Nandina domestica 'Gulf Stream' in foreground. The Japanese maple in front is a really nice cultivar though hard to find - Acer palmatum 'Iijima Sunago.' The maple in back is Acer palmatum 'Hogyoku.' These are both in fall color.