Is this easy to do?
i know what i want to knit but i cant find a pattern for it anywhere so i am thinking about designing my own. how/where do you start
any tips please 
Lois
Designing your own pattern
[color=blue]I learned to design my own patterns after making many, many (many) sweaters from published patterns.
I did a lot of sewing at that time, so I knew the basic shapes of garment pieces.
I started by making changes to published patterns. Usually changing set-in sleeves to raglan yokes.
Take note of my signature.[/color] 
I think it depends on what the item is whether it will be easy or hard, and, of course how experienced you are. If it’s a scarf or similar type thing, it’s just a matter of finding a stitch or combination of stitch patterns you want to use, a yarn you like, and going for it. :XX: If it’s a fitted garment, ask someone else!!! :notworthy: Something in between, is, well, in between. 
My proudest example is a full-size book bag I made for my DS. He asked me to totally do it myself, so I didn’t use any pattern or anything. Got approximate measurements from the standard store-bought one he had, got some heavy duty yarn and just knit until it was the shape and size it needed to be - by eye, I guess you’d say. Put on a pocket, lined it, adjustable straps… He’s used it for almost a year now and it’s holding up pretty well. :happydance:
What is it you want to make? I’ll bet someone here can help find a pattern, or give suggestions if you’re more specific. Good luck!!!