i would just wear a jumper, the skater skirt with tights (thermal ones if its really cold) and docs
If you have a thin waist, you can style it with a crop top and a cardigan. You can also wear it with a knit sweater, a scarf, tights and boots. If the weather is too warm you can simply wear it with a loose tank over it. I don't know what's the weather like in your country so I can't be more helpful than that.