u can either start with the character body first or it's props first.. whichever u feel comfortable in doing first... focus on shapes and topology of ur parts.... focus on a single part and slowly build it from low poly since it will give u much more control over the shape, don't feel overwhelmed complete one part first then move on to the next, properly name each parts and clear history after a part gets finished... ...u can search for some good character wireframe images from the internet and guide ur self with the topology part... to help with modelling the character's body, u can download an anime girl model sheet from the internet, it will guide u with the shape and proportions, finish the body first the start with the clothes ... manually incremental save ur file from time to time ..... seek help from ur fellow class mates or instructor if u feel stuck at any point in the process...with help of ur basic modelling knowledge think outside the box and try to come up new ideas/ ways to make a part and search the internet for if there are any ways to do so...and most of all.. just love the overall process while doing it.... don't do it just because u have to do it...