If you are skilled in craftsmanship, you can also lay floor coverings. Above all, you must be able to make cutouts (e.g., around heating pipes or fireplaces) and adjustments to walls, otherwise it will look ugly. The subfloor must be completely even, otherwise every unevenness/inaccuracy in the subfloor will be visible through the cork. There are many DIY enthusiasts who lay floors - it works.