Pipeline management. Start figuring out who else you can work with and get in front of them to pitch. One of the big risks in this business, is that if a big portion (or all) of your time is going to one client, it can all disappear overnight. Ideally, you want to be selling work to 3 or more clients and have work booked at least two or three months out. The more clients you can spread out your time to, the lower your risk.
Bidding work fixed price is great in IT consulting, especially when you have very complete information about the problem, and can minimize your risks. Scope management is the biggest issue when you bid fixed price, so constrain the problem very carefully in your SOW.