From the start got to focus on not to let the opposite mid player approach the crips line. Then try to gank some heroes after you got strafe 3rd level. After continue on seeking for a single targets n don't forget that t1 towers don't have BD protection, push them using SOUL RING-STRAFE.
Your role is to keep killing opposite carry and a mid player while ur carry is farming.
If something goes wrong, switch to farm. Never forget to use the soul ring. GLHF