What putty are you using?
I use Testor's white and Bonda Red Glazing putties, m'self... THe Bondo can be thinned with liquid cement (Testor's Pink Label) and the Testor's White (Grey tube) thins with rubbing alcohol. Thinning putty goes a long way in reducing sanding times.. Always wet-sand, putty, BTW... The sandpaper or films will last longer, clog less, cut better, and leave few sandscratches behind..
For glues, I prefer Testor's Liquid Cement in the pink-label bottle, Testor's Model Master Liquid Cement in the black bottle w/ needle applicator, and some "five tubes in the pack for 1/99"-type CA glue... Apply the Testor's Pink with a brush, preferably about a "0", and don't sweat it drying on the brush. It evaporates too fast for that. The brush in the cap is about useless... Gluing with it is a tricky technique at first, due to the capillary action of the cement, for some practice is necessary.. Best way is to hold the parts together, then touch the brushfull of glue to joint, then press it together hard. A few seconds of holding, and it's done. But watch out for panel lines near you fingers.. The glue will run down those and can get onto your fingers, and poof! Instant glue-print..
The black-label Testor's is just as good, but is thicker, and will give you more working time... Works best for long joints like fuselage and wing-halves.. Another gling tip: Give each surface a quick swipe or three with some sandpaper.. Just enough to take the shine off.. The glue will set faster...
Lotta gys Poo-Poo them, but I like the Testor's Sanding films too.. Used them for over 25 years..A variety of grits come in the pack...
If you plan on brush-painting the entire model, stay away from Tamiya bottles.. They hate being brushed on... Testor's makes a set of camouflage colors, and a set specifically for aircraft... These have the basic colors you'll need, but you'll still have to pick up a few bottles, along with some clear Dullcoat and Glosscoat rattle cans... I know I sound like an ad for Testor's, but the paints, especially their Model Master lines of enamels and acrylics, and their rattle-cans, are really good paints.. I've used Testor's on every model I've built, one place or another, since 1968 or so...
Get those cutters and a good, pointed tweezers, too... And those brushes, you'll need a good flat too, for painting large areas.. The rounds don't work so well there, and keep in mind that rounds are VERY important, since what you're paying for is the brush point.. Take care of it... Lick it back to a point when you've finished cleaning it, and put the tube back on.. Don't leave brushes standing tin the thinner bottle either.. They get a curve in them that you'll never get rid of...
Get extra blades for that knife (X-Acto or Excel) as well.. The only thing will slice your thumb open quicker than a sharp blade is dull one... I keep a few packs of No. 11 blades on hand all the time.. They're cheap (Excel is the brand I use, rather than X-Acto), so change them.. Old ones can used for scribing and scraping though, so don't toss all of them..
Also, in "How To" section of the site, at the top of this page, there're two sections really worth looking at.. The first is "Reader Tips", the other is the "Glossary"... Use 'em...
Keep us informed as to your progress with your builds!