What are you most proud of? Sizing. The pattern only goes to size 3 but I was able to enlarge and make it fit. Mainly I added to the side seams. BTW, I think the size 3 is a generous size (read big) so you can probably sew it for a 4 or 5 year old; you might need to add length. What advice would you give someone starting this project? Read through the pattern instructions first. You might find fitting the collar a bit challenging but remember that keeping you seam ripper nearby is always a big help. You can do it! Also, I use snaps instead of buttons. It's quicker to finish the shirt this way and also easier for boys to button/unbutton on their own.