I began by hand drawing templates for a tie and bowtie. As these are fairly simple shapes, it was quite easy to freedraw the shapes. If you don't feel as confident there are many printable outlines online.
For a finishing touch I used white thread to blanket stitch around the material. If you are unsure how to blanket stitch, here is a good tutorial to use. My blanket stitch isn't perfect but it's quite neat and I'm pleased with my end products. The more I make, the better my stitch will get :)
These would also make cute gifts and presents for other little baby boys in your life. After all what little man doesn't look dashing in a tie?