Some top lane tips, important information I'm missing?

I've been playing League for quite a while but never really got into ranked. I've played ranked, just not as often. I play normals most of the time. I'm pretty good at Mid, AD Carry and Support. I used to play top for a while and I was doing pretty well, but lately I seem to be losing every laning phase at top I'm in. I'm not sure what I'm doing wrong but I am doing something wrong for sure. Any tips would be appreciated. Since summer vacation has started and I'm thinking to start playing ranked again, but I feel I need to learn to top lane a lot better before I can start again. If my top lane starts going well I could start looking into jungling again.