If your going to try resin for the first time go small. Ask me how I know. Resin is expensive, smelley and gets very hot which can distort the kit if your not carfull. However, it can make an exceptional dio. I was thinking of picking up some fiberglass resin from Walmart to see if its clear enough after drying.
As far as what to do next, Goldhammer is right, it depends on what your looking for. Inproving your skillset, reaching out of your comfort zone or just having fun with something easy.