ok, so i think i understand (thanks! youre so good at sharing/explaining your techniques). anyway, decided to put the tulle skirt on hold- dont have any tulle yet!

went to
walmart today for light bulbs (not that that matters!

) and strolled thru the girls clothing to see if i could get inspired. well i found a mickey tee for my dd. it had old school mickey in a rainbow outline. anyway, i bought it because i knew i had some cool stripe fabric at home that would go perfect. i get home and decide to finally try a tshirt dress using the two. i hemmed and gathered and pinned. i took one final look before i permanently joined the two and it hit me......i should make it a tulle t shirt dress (then im trying two new things at once!).
so heres my question. i have the piece of fabric hemmed at the bottom. it is my desired length (once its sewn to tshirt). i also have it gathered at top to fit tshirt. where do i go from here? i would like to take the piece of same fabric i have left and make a top layer, tulle middle layer and use the piece i hemmed (the original piece) as bottom layer. i like the look of top layer being a little smaller so more of the tulle is exposed. (i think kinda like the jojo and minnie skirt a pp gave a link to). so do i just sew all three layers together at top and then sew that to tshirt? i was thinking about leaving some room at the top of the first layer to "fold over" the tulle and other layer, so that all raw edges are kind of tucked inside. what do ya think?
sorry again for my rambling. im such a visual learner. wish one of you ladies could just come to my home and show me how to do all of this stuff! anyone vacationing in baltimore this summer?
thanks again for all of your help!