Design

Did you do any course related to sketching? If not, there is an internship program from EXPERTSHUB in summer in Delhi and other places. Check it & go for it. Download tutorials from YouTube. Sketching apo is available on playstore to learn basics.

So, you want to become a fashion designer and start your own label - and also participate in fashion shows. So, for this, take up a degree course in fashion designing from top fashion institutes like NID or NIFT. Otherwise, Pearl Academy and IIFT is also good.
You donot have to choose subjects - the subjects are integral part of the course material.
In FD - you will learn sketching / designing / pattern making basics / CAD / illustrator / graphics etc. All these are important to understand the concept and possibility of a design to culminate in result.
So all the very best. Prepare for enterance and get admission in best colleges.

Viscom is a programme in visual communication that gives you a well-rounded exposure to the creative field including writing, editing, photography, film, animation, design and other aspects of the media. Crafting and 3D sketching, etc. are a part of all this.
This programme covers 3D designing and presentations.
1) Highly creative field.
2) Opportunity to work with new and emerging technology.
3) Job growth projected with demand for animation and visual effects in video games, movies and TV.

I feel one should focus on one course at a time. If you believe that you can manage both, I suggest you to take two courses in nearby fields, so that you can cover both.