An emerging or new designer needs time to get a range developed; you don’t need to know too much about the fashion processes, except it doesn’t happen overnight.
Time to achieve this includes; the designing process, fabric and /or printing resourcing, pattern making, sampling, testing, developing technical packs, grading or getting patterns ready for production.
All processes can overlap each other or may run together at the same time.
As with most good things, this takes time effort and money even with free or good resources and
In Summer you develop your Autumn and Winter styles