There are so many different illustration styles and despite that, it's interesting to see how much trends affect the usage of different styles. I was not aware of the work of Enisaurus until I ran to her/hir Behance profile.
Commitment is a key factor of the learning process and to evolve in whatever you are doing. I believe there's only way to commit to something, it's to do it repeatedly until it becomes natural. Focus, learn, repeat. Mike Winkelmann, also known as Beeple has been doing that everyday for the past 8 years. He has been creating an artwork every single day and the result is nothing short of amazing.
Beeple is Mike Winkelmann, a graphic designer from Appleton, Wisconsin, USA. His short films have screened at onedotzero, Prix Ars Electronica, the Sydney Biennale, Ann Arbor Film Festival and many others. He has also released a series of Creative Commons live visuals that have been used by electronic acts such as deadmau5, Taio Cruz, Tiësto, Amon Tobin, Wolfgang Gartner, Flying Lotus and many others. He currently releases work on Flying Lotus' Brainfeeder imprint.
I'm on my eighth consecutive year of everydays (haven't missed a day!) and this year I'll be doing a render everyday using Cinema 4D and mostly Octane, but will also be incorporating Houdini, Worldmachine, 3DCoat, Daz3D, Fusion360, Moi3D and more!!! :)
For more information, check out http://www.beeple-crap.com/