help / advice needed on my budget garage build,

[mospin]

as above really ive always wanted a garage so I gave my self a budget off 500pounds so far ive spent 70pounds the rest has been donated by ether freecycle or friends or neighbours.

I started off with a base frame using light breeze blocks then built a basic frame using 4x2 with roof battons at a slope for rain to roll off. the ouside is recycled pallets and the inside will be 12mm ply and the roof will be done with corrugated sheets.

the sizes off wood are not accurate and even tho it looks like a sore thumb it will keep the car dry and i can do more on it next year

so far the sides are up apart from 3 sections
the front where the main garage doors will be has a frame off 8x4
the roof has ten 8x4 beams
I have the double glazed windows in and a double glazed door

now heres my problem but please bare in mind ive never worked with wood before so its all trial and error
the whole frame slightly moves at the top from left to right so I cant open the door I need to know where to put in supports and where
if I push the frame from the top left to the right I can them open the door

thats as far as ive got also the inside concrete base is not done yet as I thought id do this last as I need the rest up first before the british weather kicks in and I'm doing it for a couple off hours a week

thanks

picture

[omega]

pics are needed here

[mospin]

picture up

[omega]

how have you tied the sides together?

[mospin]

I built the them in sections

2x sides
2x front /back

then stood them up and bolted together included I think 6" wood screws so its pretty solid but I need to know where to put in cross beams or supports off some sort

is that what you mean I have no form off support inside on the sides themselfs just the roof beams joining to them at the moment

ive done a rough terrible drawing on paint to show where I'm at its just the basic frame off what ive done without the slates on if this helps

this really is a budget build with no experience what so ever but it only wobbles by about 1 inch the bottom is fine its the top thats the problem

[guz]

diagonally braces everywhere and make sure the
frame is secured to the base

[mospin]

fantastic so if i do diagonally beams from the roof to the sides all the way round including the sides that should do it ?

as for securing the base what would you recommend drilling through the concrete with plugs or posts on the inside on each corner concreted 2 foot down and bolted to the corners? or are there any other solutions