I made my first pair of sandbox pants this week. By hip,chest measurements I went with a 2T with a lengthened leg (she's 2 1/2 and 36"). When I tried them on her the rise of the pant was way too long. I have made her some bloomers and shorts in the past but this will be my first pair of pants. I have not yet encountered a rise problem before. How can I measure the rise to insure a good fit? Once I measure her, how do I determine if I should use the 12-18 or 18-24 month pattern w/ an extended leg or a 2T with a shortened rise and extended leg?