There is provided a method for shaping cells in a wireless communications network. The method is performed by a network node. The method comprises acquiring previously stored spatial channel characteristics for wireless devices (WDs), the WDs being associated with a set of radio access network nodes (RANNs), the of the WDs being measured between the at least one WD and at least two RANNs in the set of RANNs. The method comprises determining beam forming parameters for shaping cells for at least one RANN in the set of RANNs based on the acquired spatial channel characteristics such that at least a predetermined share of the WDs has a network coverage probability being higher than a predetermined threshold value. The method comprises notifying at least one of the RANNs in the set of RANNs of the determined beam forming parameters.