suggestions to improve defense of village

Symmentrical. Make your base symmetrical as it looks better and more proper.

Lurable CC. Your CC can be the most powerful defence with good troops in it so it should be in the core where it is hard to lure.

WT exposed. You should use it to cover resources so it can take out goblins and hordes of tier 1 troops out.

Your AD is horribly vulnerable. It's one of your point defences and shouldn't be thrown out of the base. Move it into the core because right now, your base is going to get destroyed by air troops.

You don't need the walls covering the elixir pumps. They can be destroyed easily with archers so there's no point in covering them. Used those walls to beef up the vulnerable parts (e.g. The sides) and cover the AD.

When you upgraded your gold storages in the far corner then you you can't leave it sitting in the corner where people can get it with a single archer.

The AT out of the walls shouldn't be there. Move it into where the elixir pumps are of you don't feel like taking the walls and to beef up the sides.

Now to the think you should upgrade.

Your AD is really weak so you ought to prioritise them first,

Then go on to the WT since they deal good amounts of splash damage.

Mortars should go to at least lvl6

Walls! Walls slow down giants and giants are powerful.

AT and cannons are just general stuff but also sould be upgraded

Teslas are important against PEKKAs but you aren't going to get gowiped at this stage. You should still upgrade them though. They take a long time to upgrade.