There is a slightly simpler way to get rid of the troubles that the skirting line protrudes: Make the skirting line and the wall flat, the skirting line is tile, marble, slate, laminate flooring can be achieved.
1 The skirting board is the same material or the same color as the ground or wall
2 is the skirting line as short as possible, 50mm is enough, the bigger and the ugly, the stronger the sense of existence (decorative wallboards are mentioned separately)