my third oliver + s style was the music box jumper, making all three girls grey polka dot versions for thanksgivng.
the fabric is a quilting cotton from gather here. at the time I didn't know it was quilt backing (and thus 120 inches wide, more than double what normal fabric is) so i had a lot of it!
i probably should have started with this style, it's simple (a one scissor pattern) but most importantly, easy to get good results with, which is essential for beginners.
i would also recommend using snaps for this dress if you are just starting out. button holes are really tricky (i was never able to get the hang of them on my old machine). however i found snaps to be a great alternative during my first year of sewing.