Riven coaching

Hello! i am a gold 5 riven player, and i'm hoping to find someone to help me get better at laning - especially versus tanks. I feel like no matter if i kill them early they just scale and by level 7 i cant kill them (unless im stupid fed). I also want to learn to play macro better from top (i know basics like tp ganking but have trouble finding good opportunities for it).

Thank you in advance for your consideration!