clothes designing and making Watch
I would say start off collating a bank of photos of clothes and dresses you like and then get a nice big sketch book and some good pens and pencils and start sketching some of your ideas out before starting with fabric. Also would be useful to know how to use a sewing machine you could ask around and see if anyone oyu know has one you could borrow and practice with.
Hey, I would like to wish you all the best for your goals. You can join a fashion institute or get associated with a fashion group or have some inspirations from instagram or famous celebrities.