Attachment for Microphone Audix ADX 10 to Alto Flute

For the standard concert flute in C the Audix ADX10 is a wonderful microphone and comes with a spring holder. But for the alto flute there is no attachment for a microphone available. I made this one in tinkercad and it works just fine. The cable comes out left and does not interfere with the mechanic of the flute. In order not to scratch the silver, it has a layer of 1mm felt inside. It is made for a flute with 25mm diameter.
One picture shows the flute in C with the standard bracket and the a