Welcome to CA!
Good start! We all have started as newb's and its just draw draw and draw. I like that you start with color I was so afraid of colors. You have used wery light and high staruration. I love to do studies of famous paintings so thats a good start for anyone that like to work with color and composition.
I dont know how good your figuredrawing is but If you wanna do character designs and creatures, figure drawing is important. Draw figures as warmup and study anatomy and proportions. Blocking out characters is a good way to learn proportions.
Keep posting and dont give up.
good start with the muscle structure. just keep on going like that. Theres always a time where one has to design a character with particular features, and think wait, I dont know how to draw the back of a human/animal etc...so it's good that youre going into the anatomy studies now. They'll be in good use in future so keep up the studying, and of course, creating your own characters.
By the way, what are you major influences? like anime, movies, books, comics, mangas etc. Having a wide variety of interests in those categories will benifit you greatly.
Personally I have more influence from Animes since they have great character designs, although some may seem unrealistic, but you can merge some style from other areas as well to your own liking.
My advice would be to keep practicing and keep posting your work on here. You'll get some great crits from people which will help you improve and you never know, one of the big dogs may drop by and lend a helping hand Great start and keep up the anatomy studies.