First issue I noticed is the bad quality. Try to save your work in .png format, and use high quality resources.
That will help a great deal. The scratch effects all around your focal point just look real sloppy.
The explosion of splatters you have in the right hand corner are way too isolated , if you're going to add effects like this, you want to keep them closer to your focal point. To be honest everything is just way too randomly placed..
Also, your text is very choppy and stands out way too much..if you're going to add text, make it smaller ,place it better, and make sure it blends well and does not stand out as a main focal point. Keep practicing.