With focus, yeah. Which means simple shapes like cubes and spheres are easy to make (She could probably do that now, but still with the limitations that she'd normalyl get like it ahs to remain in her eyesight and damage done to it will still hurt her), but a more keen edge requires an equally keen focus, so blades aren't possible without improving. This also means more form fitting force fields and such are also very difficult to maintain and create, since they require a constantly shifting detail to accommodate the body. Training is needed, and if you want, I can try to make it so that Dark Matter comes to Serenity with the offer to train her, just as he needs to train his own powers.