Can I use woven fabrics for the Perfect T-Shirt and Perfect Tank Top?
Yes, you can, but you will need to do some extra work, as the patterns are designed for knits.
For The Perfect T-Shirt - You may want to consider using the darted version, unless there is a very small (2" or less) difference between the high bust and full bust measurements. Add an extra 3/4" "just in case" seam allowance to each side seam (3/8" to the sleeve seam). Do not use the jewel or funnel neckline - they won't go over your head! Cut your neckline binding on the bias of the fabric.
For The Perfect Tank Top - Just as stated above, you may want to use the darted Front pattern piece. Add 1" "just in case" seam allowance to the sides of the tank and facings. Baste one side seam together all the way, and baste from the armhole down 2" on the other side. Fit this to you, pinning the opening together, and adjust to fit. Take out the basting, add an invisible zipper to one side, starting with the zipper pull 1" from the bottom edge, and ending a couple inches from the armhole. Construct the rest of the Tank Top as directed.