Company Procedures

What I find works for my company is having company procedures in place for the way I work. I fully believe that every company needs procedures.
I have a set way I do my invoicing, I have procedures that I use when I chat to new clients and potential clients, I have procedures in the way I work every day. I feel I have to be organised as if not then the wheels will drop off and I dont know what I am doing. So I run my business with good procedures in place.
Part 1
As I have had many of my clients a long time, they just send me an email, sms, skype or call and let me know they are sending work, or sometimes they just send. When I receive the work I then check out what it is, work out how long it will take me, what is involved and I then document all this on a spreadsheet. I then get back to the client and let them know how long the job will take and let them know whether I will or will  not make the deadline. Sometimes jobs are too big and that deadline cannot be reached therefore I will go back to the client and let them know I can't meet their deadline, but this is the deadline that is reachable, is this ok and they always come back and say that is fine, or ask me to get as close to it as I can. It's always worth it to negotiate with your client and let them know that a deadline is unreachable. I always check what work I have at that moment and how I can work everything in so that all the work gets done, this is part of keeping records so I  always know what I am doing and when. Sometimes it can get too hectic to do this, but I will do it when I get a gap.
I cannot work without my procedures in place as I just have too much work. I will follow this post and let you know my procedures and share with you some of the forms I use as I go.