I'm still pretty new to the whole YouTube thing myself, but I believe what kidcorner said is probably the most relate able post.
I recommend the Molot font because it's very clean when the right blending options are added.
My normal blending options for any type of font are ( In Photoshop)
Stroke,Drop Shadow, Inner Shadow and Color overlay checked off
Stroke- size 1-3 (Depending on color of stroke)
Position:Outside
Blend Mode: Normal /Opacity 100%
Color Overlay just play around with it, vibrant colors usually work well along with white.
Inner Shadow only thing that I figured out that makes a HUGE difference is the blend mode (I use Multiply)
Drop Shadow- This is what gives the depth of the text and helps make it look more professional
My suggestions for Molot are Blend Mode: Multiply, Opacity 75-100%, Angle (Your Preference), Distance 1-5 px, Spread 23%, size 25-75 px
Thats all for text I will leave a sample at the end so you can see what it looks like
For the picture part I recommend being creative and taking your time. Usually the best ideas come when you are in mid design and it just pops in your head.
Lastly, a good site for fonts is dafont. Just pick something that isn't to clumped together.
I hope you find at least a little bit of this helpful and look forward to your creations
The photo at the bottom was one of my thumbnails with the font layout I just talked about.
