Help top

I want to be able to play with my son, but I suck real bad. We just do norms. I'm actually best at Nami support but everyone else likes support too and I'm willing to try anything. I keep getting stuck top, and I am bad. My CS seems ok I think, but I get pushed slowly until they put me in a position where I'm trapped under the tower. Then it just snowballs downward from there. So far I had some success with Voli and Maokai, but epic fails with Panth, Teemo, and Mundo. Any advice is appreciated. I can answer questions which might help discern the situation. I usually play ARAM and features. Not great at SR at all.