Here are some tips to increase your web designing skills.
1. Browsing & Collecting
Let's browse design portfolios every day and learn design elements, colour inspiration, typology and the latest trends in web design. You may find awesome design creation and thinking from experienced designers all over the world.
Start to collect inspirational stuff that can use in your design if you need. Then try to make your own project with sketch on paper before going to the computer.
Here are some sources: