super secret bag making tip - use fusible Thermolam on lining instead of outer fabric. Because the thermolam is so thick, you should press it with the fabric side up (interfacing underneath), so the heat is getting to the fusible side, otherwise your interfacing won't stick or stay in place.
Some great tips. In depth Sewing Tips for Beginners. Learn from the (many) mistakes I have made along the way. Here is a list of 10 things I wish I would have known from the beginning of my sewing journey that would have saved me a lot of money on fabric from trashed projects ;)