Wedding plans can be done by yourself and also ask the help of the professional wedding organizer. It actually depends on the wedding that you will have. If you want to have the bigger and luxury wedding design and concept then it is better to ask the help of the professional wedding organizer where you will not need to do anything about the concept, design, decorations, food and drinks and others.
But sure, it will cost you more. If you want to go with wedding plans on a budget then it is better to ask the friend or just do it on your own. You may think that doing or planning the wedding on your own can be difficult one; sure you will still need the help of other persons such as making the dress and cakes.
Of course this Wedding plans by your own here means that you have planned well about the timeline before the wedding all of the preparation should be check by your own and more. Therefore, if you want to do all of the wedding elements on your own, it will be better to choose the wedding with simple design and concept for sure. So it will just need a less than the bigger one.