Another trick for making outfits from disparate items is to use scarves.
I have a huge basket of scarves in the botton of my wardrobe which I bring out when inspiration is needed. I pulled out all the ones which contained purple somewhere and put them with the jcket, though several of them would also work well with the skirt (but not both together!)
1. Ivory scarf with lavender print
2. Green, pink and purple scarf
3. Desigual Aqua Blue Scarf
4. Red Silk Scarf
5. Book of Kells Scarf
Scarves 1, 3 and 6 would also work really well with the casual purple skirt, a tee and the denim jacket.
As well as the scarves I have multiple necklaces which include purple - purple with grey, purple with amber, purple with coral pink, purple with brown and purple with silver. Any of these can also inspire a colour scheme.