community of dyers

in a few weeks i will be teaching a class at my old middle school how to tie dye! im really excited and i hear the kids are too. im asking for any advice on my upcoming venture.
i will have 2 days and 45 minute periods with 24 students. im doing all the dye mixing and prep work outside of class time, and im thinking day 1 we can talk about colors, folding, and i want to let the kids design on a sheet of paper how theyd like their projects to look to get an idea of how things unfold. i will show them the spiral and heart folds.
day 2 will start with prepped materials, being the pieces they have brought in. they can fold a design i showed them or do whatever they want and then got to the dye stations in 2 waves. then i will wash out their stuff so they can get it the next day.
this sounds feasible to me, but im no teacher. how can i make this a fun and creative experience for these kids so they can show off their work? thanks for any tips!