I'm sure your knitting isn't that bad. All you need is to practice. Slouchy hats really aren't that hard... you start with a band for a basic hat and then once the band at the bottom is finished you just increase a lot and knit until it is long enough. That was probably a really bad explanation, but that is how I do it.
This is my latest creation: The Runaway Hat. I call it that because I started with a basic pattern but didn't follow it all the way through and it sort of evolved as I made it. The pattern sort of ran away from me and the hat got a bit out of hand. I used a purple, worsted weight, acrylic yarn and I forget what size needles.
I tend to mostly knit on the bus or in tiny little spurts of time, so the hat took forever and there are different bits in it from different days, so it doesn't really look like one cohesive pattern. The first and second half of the hat look like two separate hats that got squished together into one. I think it turned out pretty well anyways. I'm not sure if I like it enough to keep it though, so tell me what you think!
This may seem like a silly question, but I need help determining what size of needle to use. All my knitting needles don't say like size 7 or anything, they just have the width in millimetres. On most patterns though, it says size 7 (just an example) and doesn't specify the millimetre width. Is size 7 the same as 7 mm?