Update all your documents and write a Business Plan
Make sure you have all the documents you need and that they are accurate and up to date. You need to have a solid business plan in place with facts, figures, estimates, and forecasts. Lenders are making an investment and taking a huge risk when dealing with commercial real estate. If you don't have a business plan that indicates that you have put a great amount of time, effort, energy, and thought into your business, they are going to be less than enthusiastic about the prospect of taking that risk.
Put your own money into the property, it will lessen the risk for the bank.
Have money of your own to invest in the property. For most commercial real estate investments you will need a down payment, closing costs, earnest money, and points that may be required. Banks want to share the risk not absorb it. By taking some of the risk upon yourself, you are actually lessening their risks while increasing their confidence in your ability to make good on your debt to them.
Don't over extend, more investments are out there, choose the one that fits your budget.
Be absolutely certain that you can afford to keep your business operating and still make the payments on the business. If you can't do this, or you aren't certain of your ability to do so, then either now is not the best time for you, or this is not the right investment for you.