Eventually you will always the one designing the spells so there's no point trying outlandish things. Try making your spells in the easiest way, which is simply using your imagination and your creativity. ;)
My tip is this. Take time to logically define your situation. Write this down on paper. Make an evening of it - this step is very mundane, i know, no witchy, incense smoke, magic secrets here, but leave it out at your own risk. You will use the answers to help solidify your magical intent. It's also helpful to research the magical correspondences specific to your unique situation. Fortunately the internet makes this easy. Google "magical correspondences" or something like "(money, success, protection,love, etc) spell correspondences." Alternatively, you may come across a spell kit you ressonate with. Researching correspondences is important because we are doing natural magic here, thus we need all the help from our magical world as we can get.
Words and mantras are under your choice if to use them or not, keep in mind though that you need no poetry to successfully cast a spell.