The designing process is not as simple as it is thought to be. It requires a great effort with time and patience on the part of the designer and also the client. The relationship between a client and the designer can be peaceful by coordination and cooperation of both. Always try to give constructive feedback in a timely manner.
At the same time giving an honest feedback is equally important and therefore one should be polite and as well sensible. Firstly, having trust is very important as sometimes even the greatest designers do not hit up to the mark in that situation one should not panic and communicate as much to solve the designing issues.
Next, communication is the key to every misconception. After a communication and insight into other’s perspective ideas can evolve into something better. Be clear in your suggestions and demands you want from your designer.
Negativity will never encourage your designer to work at their best and it can also be annoying. Giving opinions in a positive manner will always lead to the results you were wanting without putting the designer down.
Always be clear and concise with your needs as this will help in avoiding confusions and finally get you to a great design as you needed.
As said earlier, trust your designers. As sometimes you might not like what the designer is doing but later on it can prove to be a successful piece of work, so just have patience and trust. If you are unsure about something try to communicate and also understand the fact that the designer has much more artistic sense than you.
Ultimately both the client and the designer have the same goal, which is for your visitors to understand the message that you are trying convey.