Btw. the clouds are the same shape as the island just squashed and coloured to match the sky gradient. Try reusing shapes even just slightly modified, recoloured, squashed, rotated or flipped to speed things up, add variation and make your scene more interesting.
A lot of the objects I am covering in my tutorials (like the palm trees above) working from predefined shapes (circle, square, star, etc.) is only one option. The freehand or straight line tool will create identical shapes but require a little more artistic skill.
For our detailed palm, we need two ‘more advanced’ features of Inkscape: Interpolation and Path Effects.