Actually the face looks lil bit flat to. Add shadows on the suit , you have the same contrast and color all over the suit. Try Selecting the suit and apply dark dull layer of color, mask it and erase where the light falls on him. Darks and lights reveal the the 3d feeling. I hope I help.

Hey @sparrowsky! Good start! But I agree that the image begins to flatten out a little. (I've definitely had my fair share of getting stuck on a painting- good thing is that it forces us to figure out how to move forward). If you judge for yourself that an image is getting boring then it's safe to make a drastic change or even just start from scratch. For me, the solution was to take it slow and do the head study first and build a new image off of that. I have more technical painting notes on the image attached- but the main issue to get over is if it still looks boring to you. If the Joker is just sitting at a table- you might have a hard time with the boring problem. There are endless ways to build interest in an image but I'm a proponent of creating interesting shapes/silhouettes. It's the simplest way to create a good design. With this in mind, I posed him with his quirky hunch displaying his "business" card. I made sure to vary the angles and contour lines which helps create movement in an otherwise static image. I also let some of my painting get really loose- the sketch quality sometimes retains more life than a fully rendered painting. It's also just more fun! Hope this helps! I added an unusual amount of notes in the image this time so let me know if you have any questions! Thanks for sharing!

Great job on the expression on the face. your painting looks just as menacing as the reference. I think a few adjustments in the drawing phase of the head will make it look more believable in terms of form. Try overlaying the Loomis head over your head to have a better sense of rhythm and structure. Happy painting! Gino