Clothing is a design,

Without an art foundation, it is impossible to become a fashion designer.

You'd better start with sketch (6- 12 months) and color (6- 12 months), and you can combine sketch.

Then learn graphic design+color design (both basic) 3-6 is also ok.

Then, from the clothing structure, materials and other aspects. It is estimated that it will take about 3 years.

Being a designer in one year is one of the few geniuses. If you have no foundation, study hard for three years. )

Note that many people who have studied for three years come out with bad designs because they are too noisy and lack reliability.