Therefore, I would strongly suggest you do not skip the process of fitting, whether it's for your bespoke suit, blazer, or sportcoat; however, the imperativeness of fitting would help the cutter or master tailor analyse the morphology of your body and the flexibility of your movements.
Essentially, the fitting process would be divided into two sessions. During the process, you could feel the refinement and the essence of craftsmanship. However, in the first fitting session (basted fitting), the chosen fabric has been cut along with the precisely measured and crafted paper pattern that was made by the cutter or master tailor from scratch according to your individual measurements; thereafter, the fabric is stitched all together with a white basting thread by hand for the time being to ascertain the shape of the garment.
And in the first fitting, you couldn't see any sort of lining to cover the interlinings of the suit jacket either. Also, there are no pockets, but perhaps you could see the sign of pocket placement with the baste stitching. Besides, there, you couldn't find buttons as well. Hence, they use pins to fasten the suit jacket and trousers while fitting, and then they begin to measure and point out with the tailor chalk if there are any adjustment needs in the suit. Whereas, after the first fitting, each measurement is transmitted to the distinct paper pattern as well.
Nevertheless, in the second fitting (forward fitting), you could see the lapel facing, the pockets, and the lining stitched inside. Also, there are well-finished button holes in the suit jacket, whereas the undercollar and the sleeves will remain with bated stitching. Although they would elucidate each measurement and the fit of the suit,
Therefore, the forward fitting is essentially for us to convey our needs and specifications to the master tailor or cutter. Besides, in this session, they would predominantly focus on the aesthetic parts and the overall silhouette of the suit as well.