Girls Clothing - Leggings
If the alteration is difficult, then make a duplicate pattern made with newspaper, make all markings and notches on the duplicate, and make the necessary corrections on it. It is a good idea to try out the altered pattern in muslin or old cloth to be sure of the fit. Then alter the original pattern in the same way.
Stage 2: Substitute dress fabrics; To model the entire garments in the actual fabric is ideal, but unfortunately it makes experimentation expensive. For this reason, professional designer may use a fabric with similar properties which has been left over from a previous collection. Alternatively, the non-draped parts of the garment can be modeled in muslin with just the draped sections made in the actual fabric. When draped designs for checks or stripes, mark in the position of the lines on the muslin to get the effect of the fabric and to match the lines along the seams.