Is there any tips or glitch that will help me get 100 smithing?

Make bows, and the higher the level you get, make the higher level bows.

Get Prowler's Profit, get transmute, buy tons of iron, make jewelry until you can't take it anymore. On the other hand, you could go into dwemer ruin, pick up as much smeltable dwemer material as possible, make dwarven bows until the sun goes down.

take a bow, go out and make skyrim's wild life extinct, and be ready to sell some leather armor out the back of your van like it was crack.