Well, you have over-used too many effects mostly bright effects or options in the hammer of sejuani and also at the bottom text "LEGENDS".
The only thing I like its the effects that you used around the text. Nice colors.
But as a whole outcome its not good dude. You have to learn how to decrease the opacities from the layers dont use 100% opacity in your layers make them 50 or 60% and you will see it more better.
Your weapon for your success its your eye. If the image fit nice to your eye it means that you did nice job. Anyway, it has mistakes. I can spot you exactly where if you want.
That's all.