I'm trying to improve my computer drawing skills! Also, I'd like to find my own style!

Here is a picture with four different themes. Winter, Black and White, Autumn and Spring. I'd like to make cards with these. What do you think? (quality is better on my laptop!)

I have been in Australia for a few weeks now. After being disappointed a few times I am now happy to know that I will have a sewing machine very soon. I ordered it online yesterday and I hope to receive it soon. Now you understand why I didn't write anything...