Step 1. Find examples of UI work that is of excellent quality, such as those selected by Behance moderators. Keep these as a reference.
Step 2. Choose the style you want to explore. It’s impossible to cover everything, so focus on one area for each lesson. Consider choosing a popular trend or something that is quite new to you for a challenge.
Step 3. Select 1 screen/page per session. Open the interface in a separate window and in a graphics program, try to replicate it perfectly without using an eyedropper tool, ruler, or inserting the image to copy from. Replicate EVERYTHING intuitively — look for similar photos, draw the icons yourself, choose colors, try to find a similar font. The aim is to make it as close to the original as possible.
Step 4. Repeat the previous step 3–5 times for different projects by different authors — but stick to the style that you’ve already chosen.
Step 5. Get started on your own project and be happy, proud and excited!
Novice designers can learn about 3–4 different styles to get a base knowledge. So you’ll reach a total of about 9–20 interfaces: this is guaranteed to help you receive a decent level of work. This will take about 1.5 months if you can devote 3–4 hours a day to improving your skills.