Starting landscaping - could use some advice

This is the beginning of my journey into model train landscaping. After watching countless videos on how to do this, I still appear to not be doing a good job at it. I know that it will take practice to get it right, but I'm reaching out to viewers here for any suggestions that you all might be able to give me on what you see that I could improve here.

£25 Train Challenge at the National Festival of Railway Modelling
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£25 Train Challenge at the National Festival of Railway Modelling

104: Scratch-built / Print-out Retaining Wall on My Model Railroad Layout
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104: Scratch-built / Print-out Retaining Wall on My Model Railroad Layout

The New N Scale Layout Gets Some Interesting Paint & We Run Our First Train
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The New N Scale Layout Gets Some Interesting Paint & We Run Our First Train

Autistic man creates huge "N gauge" diorama "1/150 scale detailed and elaborate town" President's...
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Autistic man creates huge "N gauge" diorama "1/150 scale detailed and elaborate town" President's...

Reading RR Catawissa Branch;  Milton,  PA  Industrial District finished
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Reading RR Catawissa Branch; Milton, PA Industrial District finished

My New N Scale Layout Running Full Outer Loop And Station Plans
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My New N Scale Layout Running Full Outer Loop And Station Plans

Troubleshooting a Turnout Derailment Problem on my N Scale Model Railroad
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Troubleshooting a Turnout Derailment Problem on my N Scale Model Railroad

Turn Your Plywood Into Awesome Scenery!
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Turn Your Plywood Into Awesome Scenery!

Scott Ritter: Russland gewinnt den Krieg – und das eindeutig
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Scott Ritter: Russland gewinnt den Krieg – und das eindeutig

3D-Printed Houses Are Already Failing
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3D-Printed Houses Are Already Failing

Easy Ground Cover That Makes Any Model Railroad Look Better
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Easy Ground Cover That Makes Any Model Railroad Look Better

Poland Just Did Something BRUTAL To Bypass Kaliningrad... Putin's Trap BACKFIRED
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Poland Just Did Something BRUTAL To Bypass Kaliningrad... Putin's Trap BACKFIRED

Kato HO Unitrack Starter Set Layout - Will Vintage Locomotives Work?
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Kato HO Unitrack Starter Set Layout - Will Vintage Locomotives Work?

Changes – what's next | Märklin C-Track layout | Our workday | Episode 31
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Changes – what's next | Märklin C-Track layout | Our workday | Episode 31

Is Model Railroad Burnout The End ? | Laying Rail For Weedy Track | Boomer Diorama
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Is Model Railroad Burnout The End ? | Laying Rail For Weedy Track | Boomer Diorama

Model Railway LAYOUT 3 UPDATE 6 Top Tips & Lessons Learnt Before The Maiden Run Kick Off | ml111
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Model Railway LAYOUT 3 UPDATE 6 Top Tips & Lessons Learnt Before The Maiden Run Kick Off | ml111

INDUSTRIAL area EASY + AFFORDABLE from leftovers! H0 model building TUTORIAL #kunstmichiworld 165
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INDUSTRIAL area EASY + AFFORDABLE from leftovers! H0 model building TUTORIAL #kunstmichiworld 165

Laying Tracks & Ballast - Building a Beginners Model Railroad from ground up.
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Laying Tracks & Ballast - Building a Beginners Model Railroad from ground up.

Making Roads out of FOAM
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Making Roads out of FOAM

CR&B Railroad HO Scale Layout Tour | Clark Bauman
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CR&B Railroad HO Scale Layout Tour | Clark Bauman