Often with me i draw from sinema sometimes and it helps me think a bit and helps me work through challenges. wewe could also give a comic strip a try. Like the person before me alisema take a scene au chapter from a book au your own mind and draw a little comic strip for it.
From my view of your drawings I've got a little constructive criticism for you. wewe lack dimensions. That is something wewe could work on trying to make drawings with perspective and add shadows. A good exercise to work on it is exploding box effect. At this link wewe can see a pretty good example of it.
link Another thing wewe could do i learned this from my art student teacher. wewe put dots down in a pattern with curves like wewe can make a cursive L au C etc. au something wewe designed yourself as many dots as wewe want my first one was about 200 something anyways. Your total number has to be a multiple of three. When wewe divide your number kwa three it should come out without a decimal. Once wewe have the number wewe go to the dot number that it is and start drawing lines from there each dot should have a dot corresponding to it. wewe draw a line from that dot number to number 1 and then wewe go to the inayofuata one and draw it to two and so on. I believe it was called a helix when it was explained. It should look like a cool spiral type thing when its finished