First of all to get into any flield theoretical knowledge is a must as that is the base of your knowledge. For example if someone leaves u in the kitchen and ask to cook fried rice u must know the recipe after that only u take any step and then once u read recipe u try to find out new way of doing this make changes. Same way after having theory u can do practical and ofcourse after doing practical u come to know more about the same.Theory is just a coffee, milk and sugar but practical is how u make and how u serve. so as per my view i'll give 40%to theory and 60% to practical