Need some serious wax for this wannabe masterpiece
I'm not giving a good score, or a bad score to this work. It's not a bad concept, but you should check out the portal under the Series section. There is a series called Unforgotten Realms there, and they bash on D&D hard and add in their own humor to it.
Check that out first. Otherwise, just keep in mind, a phenomenal story or humor is more appreciated than stunning art! So keep at it man, you have some humor that UR has not expressed yet, so just focus on those strengths.
Good Luck to ya!